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Very Hot Topic (More than 25 Replies) .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall? (Read 4819 times)
rnnhntr
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.22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Feb 19th, 2025 at 12:44pm
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I am going to purchase a dedicated .22 BPCR rifle and have narrowed the choice down to either a CPA 44-1/2 or a C. Sharps Low Wall. Being able to use multiple barrels on one action is not a consideration for me. I am reasonably familiar with and like both. My wife and son both shoot C. Sharps Highwalls for BPCR so I have some experience with the C. Sharps rifles. Price is close enough to the same on both not to be a deciding factor for me. What I am looking for is feedback from folks who have competed with one or the other, or both on what they like and don't like about their rifles. For the CPA, what lever do you have, and what do you like or not like about it.
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #1 - Feb 19th, 2025 at 1:01pm
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I’ve owned both and now just own the CPA. Better trigger and more accurate.
  

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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #2 - Feb 19th, 2025 at 3:22pm
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I have a CPA that I ordered new in January of 2022.  It has the plain "S" shaped lever and a 28" Shilen barrel.  I shoot it most of the time with the Schuetzen sight from MVA, but it also has scope blocks.  I prefer to shoot with open sights if I can.  It has won its fair share of 100-yard benchrest matches at our local club.  I like the camming ability of the CPA, and it has good extraction.  I have no experience with the CSA low wall.  If you have any questions about the CPA, feel free to ask.  I'd be glad to answer if I can.
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #3 - Feb 19th, 2025 at 4:05pm
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Which ever you do, I suggest you have it set up with traditional scope blocks on 7.2" spacing & either a front dovetail or holes drilled and tapped for a scope block.  It's never as easy and cheap again to get it done and makes the rifle so much more versatile.
  

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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #4 - Feb 19th, 2025 at 5:00pm
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Ditto on the CPA 441/2.  I have several between my wife and I. No experience with C. Sharps.  But to reiterate, the camming action is beneficial even on the .22 LR cartridge.  Most have the ball and spur lever.
FWIW, the scoped CPA's have #2,  20" barrels. I found the shorter barrels were steadier off hand, and the with the scope, there's no loss of sighting radius.
The peep sight .22's have 28" barrels.
Mike.
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #5 - Feb 19th, 2025 at 5:07pm
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They are both quality rifles that are used in 22BCR matches. You might keep in mind that the chickens are shot off-hand, while the other targets are shot prone. Knowing this, the fit and balance of the rifle, including the length of pull and the configuration of the butt stock are very important. You will do better with a rifle that fits you. The weight and balance also come into play; barrel length and contour (full octagon, 1/2 octagon, full round, #2, #3, or #4 weight). At one time I had a rifle built with a 30” full octagon barrel. It was very difficult for me to hold it up while shooting chickens. I ended up having it cut to 26” and made 1/2 octagon. It made a world of difference. I think either is a good choice, but there other considerations to keep in mind.
I’d suggest going to a match, talk to the shooters, and hopefully you will find one of these rifles that you can look at and handle first hand.
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #6 - Feb 19th, 2025 at 5:09pm
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My CPA has a 28" Shilen #3 weight which gives me the same rifle weight as my 30" 32-40.
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #7 - Feb 20th, 2025 at 12:15am
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This is not a comment on which brand is better but on the barrel length for off-hand chicken shooting.  In late 2023 I had a Stevens 44 .22 re-barreled with a 20" barrel.  It made a world of difference.  Not only is it more comfortable (better balance) to shoot off-hand, since .22LR velocity drops in barrels longer than 16" to 18", velocity increased significantly over the original 26" barrel, resulting in tighter groups at all distances.  Depending on the ammo, the velocity increased from 30 to 45fps.

Wayne
  

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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #8 - Feb 20th, 2025 at 9:05am
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I have one of each, it will boil down to which action you prefer or do you want the cpa just to broaden your horizons. My CPA is in sillouette configuration with a Douglas barrel
I would suggest you consider a barrel for the new build with a 14 twist. I had MCGowen build that twist for the lo wall, and it seems to hold better groups at the ram line ad in the 22 midrange matches than the standard 16 twist barrels we have
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #9 - Feb 20th, 2025 at 11:20am
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In addition to action type, barrel length, etc., put serious thought into the buttstock configuration. 
I have two 22RF Lowwalls I have shot in 100 yard silhouette competition. Both are factory original from the 1880s. 
With a scope on rifle #1, stock drop is acceptable, but not ideal for standing, and nearly impossible for prone. 
With an MVA Schuetzen sight on the back and a Shaver globe in front of rifle #2, that rifle works well in either position.
I also have an original Lowwall in 32/20. It has a Lyman 52 rear sight with the factory nickel silver post in front. It has a #1 octagon barrel 26" long, making for magic wand handling.
Honestly, it's the easiest to shoot of all three with the factory stock.
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #10 - Feb 20th, 2025 at 12:47pm
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Shotgun butt best from the 22 BPCR and midrange games due to the most shots being fired from prone
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #11 - Feb 21st, 2025 at 4:13am
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texasmac wrote on Feb 20th, 2025 at 12:15am:
This is not a comment on which brand is better but on the barrel length for off-hand chicken shooting.  In late 2023 I had a Stevens 44 .22 re-barreled with a 20" barrel.  It made a world of difference.  Not only is it more comfortable (better balance) to shoot off-hand, since .22LR velocity drops in barrels longer than 16" to 18", velocity increased significantly over the original 26" barrel, resulting in tighter groups at all distances.  Depending on the ammo, the velocity increased from 30 to 45fps.

Wayne


Are you shooting a scope so the loss of sight radius is of no concern?
  

If your rifle is not in 7.62 and you can't hit what you are aiming at with de-linked machinegun ammo you are a pretender.
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #12 - Feb 21st, 2025 at 8:24am
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The accuracy gains from the longer sight radius are pretty small, especially when compared to the gains in offhand when the rifle is well-balanced because of the shorter barrel. 
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #13 - Feb 21st, 2025 at 12:22pm
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SchwarzStock asked, 
Are you shooting a scope so the loss of sight radius is of no concern?
=============

Yes, I use a 6X scope.

Wayne
  

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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #14 - Feb 21st, 2025 at 5:56pm
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Thank you for the input and keep it coming. I limited my initial information because I did not want to prejudice the conversation any more than necessary. I started out with a Cresnoe liner in my 1874 Sharps and am currently shooting BPCR matches with a Stevens 44 with a 24-inch barrel that I relined with a 1:16 twist TJ liner. Those rifles let me know that I like the game and have gotten me to where I can fairly regularly shoot high AA class scores. I usually shoot 2 to 4 on chickens and 9 or 10 on pigs, but fall off on turkeys and rams. I know that a new rifle does not make up for a lack of marksmanship, but it doesn't hurt. I mostly shoot scope, but also use the rifle in our local cowboy silhouette matches where I usually shoot in the high 20s. I do not find the shorter barrel to be a significant handicap with the irons. Most of the shooters at the matches I have attended here in Colorado or in Wyoming shoot CPA rifles, but the 1885 and clones are also popular, and both seem to be equally capable of winning matches depending on the shooter. I would like to have a low wall and a CPA 44-1/2, but can only afford one or the other. I have had good results using Lilja and Shilen barrels in centerfire rifles and will probably use one of the other on whatever, and probably with a 14-twist if I can do so. Since I am capable of doing so, I had originally considered buying an acton and building whatever myself, but I already have too many projects.
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #15 - Feb 21st, 2025 at 8:22pm
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rnnhntr, how much ammo testing have you done with your Stevens ? The TJ’s liners are very good liners. Depending what chamber you’re using and how it is set up, your rifle should be capable of better scores. Testing some different match grade ammos at 200 yds, if you haven’t already done that, should tell you what your rifle is capable of. Don’t underestimate how well liners can shoot. I have several rifles with Redman liners (which are the liners used in the Crossno liners) which are very accurate.
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #16 - Feb 21st, 2025 at 10:16pm
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I’m surprised no one has mentioned this.  I am a strong devotee of Winchester  ‘wall, both high and low, but if I were serious about rimfire BPCS and choosing between the two rifles you mention, the Stevens copy would win hands down. (Don’t hurt yourself laughing ledball!)
The Winchester has one major design flaw, found only in the 22 rf, that abominable extractor!  Ballard is better, Stevens is better, basically everybody had a better design than one that had the firing pin strike the rim that was on a moving surface.  If I had a custom built rifle and knew what I know now, it wouldn’t have that extractor.
This is my opinion based on experience with my own custom barreled (Shilen) low wall Winder Musket, YMMV.
Froggie
« Last Edit: Feb 25th, 2025 at 11:37am by Green_Frog »  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #17 - Feb 22nd, 2025 at 12:07am
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Green_Frog wrote on Feb 21st, 2025 at 10:16pm:
I’m surprised no one has mentioned this.  I am a strong devotee of Winter ‘wall, bath high and low, but if I were serious about rimfire BPCS and choosing between the two rifles you mention, the Stevens copy would win hands down. (Don’t hurt yourself laughing ledball!)
The Winchester has one major design flaw, found only in the 22 rf, that abominable extractor!  Ballard is better, Stevens is better, basically everybody had a better design than one that had the firing pin strike the rim that was on a moving surface.  If I had a custom built rifle and knew what I know now, it wouldn’t have that extractor.
This is my opinion based on experience with my own custom barreled (Shilen) low wall Winder Musket, YMMV.
Froggie


DZ makes an 1885 extractor located at 9:00 o'clock and has an ejector. I had DZ barrel a low-wall for my young son. It is a good choice.

I used to shoot a Cody Ballard, Baldwin iron sights with a 30 inch barrel and it was 100% capable of hitting everything.  The whole setup was just a little small for me.
Mostly now, I shoot the CPA scoped with the old MVA 28" and Schuetzen scope mount. It has a Douglass 16 twist and delivers for me. It has a very heavy 26 inch round barrel.  I can't shoot light rifles offhand for squat. Short light barrels don't hold for me.
    Texas Mac - I have never shortened a barrel, so I have no experience. Just a comment on velocity.... we have been chronographing our 22rf match ammo (again) since the Garman chrono units came on the scene.  To my surprise, the Eley I shoot has "Eley's" tested lot velocity on the box. each lot is labeled with its own tested velocity,  and I buy it based on their stated velocity. As an example, mine and other rifleman find their ammo runs 40fps +/- over the Eley lot/FPS number  -  well over 1100 FPS  So my question -What would the velocity be if I shot a 16 inch barrel, almost 1200FPS? and how is Eley getting such slow speeds (1065FPS) and what barrel length are they using to test velocity? Super-duper long???

The suggestion of going to a faster than 16 twist is also interesting. I have no direct experience - two low-walls, a Ballard and a CPA. All 16 twist.   GT has been telling me of his testing with fast and really fast twist 22rf's.   I am not sure I could tell!!!   It would take setting up two rifles with ammo it likes and a lot of shooting. Sure sounds like fun!!!
-Michael Rix 
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #18 - Feb 22nd, 2025 at 2:08am
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Michael,

I shoot mostly Eley Match (black box) for .22BPCR competition.  And I also purchase it based on the velocity stated on the box which certainly can be different depending on the rifle.  Wondering how Eley determines the lot velocity I ran across the following:

Once a lot is manufactured, four different fixed test guns fire that lot in a 50 meter tunnel. These rifles are all different ages (based on round fired) with different barrel lengths and chamber specs. If all four guns shoot a lot well the lot is labeled 10X. If it shoots well in some of the guns and not others, it's labeled Match. If it does not shoot that well in any of the guns, it's labeled Eley Team.

Concerning barrel length vs. velocity.  Here's the results of shortening a Ruger 77/22 barrel in 2" increments: 28" 1095fps, 26" 1107, 24" 1119, 22" 1129, 20" 1138, 18" 1149, 16" 1157, 14" 1149 fps.  So the average is approximately 4fps/inch.  I believe it was Eley but not certain & don't know if it was 10X, Match, etc.

BTW, due to CRS memory issues  Roll Eyes, there is an error in my earlier posting.  When I shortened my rifle from 26" to 20" the velocity increased an average of 25 to 35fps depending on the ammo (not 30 to 45fps).

And on 16 vs. 14-twist, if I were to replace the barrel now, I'd probabley go with a 14-twist to minimize the possibility of stability issues down range (200 meters for BPCR).  To increase stability (assuming it's an issue), one must increase the bullet spin-rate.  The faster the spin the more stable the bullet remains in its trajectory.  There are two methods, increase the velocity or use a faster-twist barrel, the faster-twist barrel being the most effective.

Wayne
« Last Edit: Feb 22nd, 2025 at 3:32am by texasmac »  

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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #19 - Feb 22nd, 2025 at 8:11am
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A mix of what I hear, think & know. No particular order.

.22 Rimfire velocity varies depending on temperature 

Button rifled barrels like Douglas are smother than cut rifled.

Muzzle weight reduces gun movement when used offhand 

50 meter machine rest in a tunnel will show which cartridges are most accurate.

Outdoor testing long distance bench rest has enough variables to mask cartridge performance 

If the shooters believes in his outfit he will shoot higher scores 

If results are important use the best you can buy and stay with it 

Boats
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #20 - Feb 22nd, 2025 at 8:17am
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texasmac wrote on Feb 22nd, 2025 at 2:08am:
Michael,

And on 16 vs. 14-twist, if I were to replace the barrel now, I'd probabley go with a 14-twist to minimize the possibility of stability issues down range (200 meters for BPCR).  To increase stability (assuming it's an issue), one must increase the bullet spin-rate.  The faster the spin the more stable the bullet remains in its trajectory.  There are two methods, increase the velocity or use a faster-twist barrel, the faster-twist barrel being the most effective.

Wayne


Not sure how much but doesn't the faster twist rate also reduce velocity?  Looks like it would be counterproductive if you gain twist rate but lose velocity while doing so.  I've read tests on 22 LR twist rate experiments.  A lot of it seems to be inconclusive, with too many variables with ammo making it hard to say whether it made an improvement.   
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #21 - Feb 22nd, 2025 at 9:18am
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The 14 twist doesn’t bother the velocity and the stability at 200 meters is real.
My rifle with the 14 twist placed 1st and 3rd ,2 years running and was the highest iron sight score at the Desert international in Phoenix
I find this rifle to be way less picky about ammo don’t know if it’s the twist or what, but shooting the yellow box Eley Target seems to work quite well.
« Last Edit: Feb 22nd, 2025 at 9:24am by Ranch13 »  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #22 - Feb 22nd, 2025 at 10:50am
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My choice was a highwall built about 20 years ago and it works pretty well.  Barreled with a GM 16" twist 30" full octagon by Steve Baldwin.  He ground a tool to cut that funky extractor.  When I got it back from Steve, there was a little binding so I was able to fit the extractor so it was about as good as you can get it.  Set trigger parts and lever were all from Cody Ballard.  Color case by Classic Guns in Illinois, wood and checkering by me.  A couple of 200 yd targets and it does like Lapua LR.
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #23 - Feb 22nd, 2025 at 12:09pm
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Choosing a rifle is a tough one, I favor the 1885 over the 44 or the 44-1/2 but I prefer the Ballard over all.   
I am currently shooting silhouettes and long range with a HW and it has a cut rifled, 1:9 twist.  It favors CX from Lapua and the velocity comparison with the same ammo in one of my "run and gun" rifles for NRL is negligible by comparison - it has a short barrel - mainly for convenience around obstacles.  A 20 - 30' fps average variance, doesn't make any difference to me.  If I PRACTICE, that is the real key, shoot good ammo, and believe in my system both of these rifle will keep me in or near the top of the winner's circle.   
Generally a rifle keeps my interest, (contrary to most's thinking) for a season and then a new build catches my focus and my process begins all over.  The High Wall and the Vudoo have both run their course and I have several new build projects in the works.  For the single shot game, this next year there are at least 4 builds in the line-up, one is a CPA but my interests are leaning back towards a Ballard.   
I believe in fast twist, they haven't won me over in the near game, 50'.   At 100 yd and beyond, the bullet rpm (fast) vs. muzzle velocity (slow) has worked well.  The performance of this combination has come closer to matching calculations on paper than the rest.  Numbers work out more often so that's a win, but a single condition change throws a wrench in the works so it raises doubt.   
More info than you asked for rnnhntr, but it's my nickle's worth.
Greg
  

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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #24 - Feb 22nd, 2025 at 1:06pm
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OK, a question from a beginner….

BPCR to me means a Black Powder Cartridge Rifle. Is BP somehow involved with a .22 rimfire Rifle? I assume not, so what is the connection between BP and .22? And what is the course of fire and targets used? Reduced size silhouette targets at shorter distances or paper targets?

Thanks!

Tom
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #25 - Feb 22nd, 2025 at 1:12pm
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Reading this thread, some are likely wondering why a few shooters are leaning towards a faster than the long-standard 16-twist for .22LR barrels.  From my point-of-view, it’s being driven by us BPCR & other even longer-range shooters using 40gr & even heavier (Aguila SSS 60 gr.) ammo to knock over those ram steel targets at 200 meters.  We’ve making tradeoffs between bullet weight & velocity while maximizing down-range bullet energy & accuracy, & staying subsonic to reduce instability.  Years ago, when the 16-twist was standardized, 40gr bullets where not all that common.  That’s my view on the subject for what it’s worth.


BTW, a heavier, hence longer, bullet generally requires a faster twist.  If you check out some of the reviews on the relatively new Aguila SSS 60 gr. ammo, you’ll run across examples of it “keyholing” even at 50yds in 16-twist bores indicating 16-twist is too slow.

Wayne
  

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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #26 - Feb 22nd, 2025 at 1:15pm
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22 BPCR uses the same rifle rules BPCR. Targets are scaled down. 22 BPCR matches generally shot at 200 yards on nra reduced targets.
There were some folks back when primed 22 cases available loading rounds with black, but for the most part shooters find the factory target ammo their rifle prefers
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #27 - Feb 22nd, 2025 at 1:20pm
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Oakdale wrote on Feb 22nd, 2025 at 1:06pm:
OK, a question from a beginner….
BPCR to me means a Black Powder Cartridge Rifle. Is BP somehow involved with a .22 rimfire Rifle? I assume not, so what is the connection between BP and .22? And what is the course of fire and targets used? Reduced size silhouette targets at shorter distances or paper targets?
Thanks!
Tom


Tom

Yes, .22BPCR is somewhat of a misnomer.  Black powder is not used but the rules are the same as those that govern big bore BPCR cartridge rifle silhouette, hence the BPCR designation.  We all shoot smokeless .22LR with the vast majority using match-grade ammo.  Course of fire are reduced-sized steel silhouettes at 50M, 100M, 150M & 200M.  The 50M chicken targets are shot offhand, the rest are generally shot prone although offhand is an option for those that don't care about the score.  Grin

The sport is governed by the .22BPCR Association.  Go to (You need to Login or Register to view media files and links). for more details.

Wayne
  

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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #28 - Feb 22nd, 2025 at 3:56pm
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Wayne,
I feel like I'm hijacking the OP's original intention and questions, so this is my last injection here - but the faster twist our group of shooters are using benefits us more for stability rather than the energy concept.  We play a version of the "Long Gong" match only rather than 300 yd, we take it to 400 yd.  We still use over the counter ammo although a few have went to loading their own using a company's turned copper pills and high quality primed cases, a lot of effort for a small return in my opinion.
Some of the proof on paper is using rotational velocity proportional to linear velocity of a known "great" combination at a near target, and finding that same proportional combination at a far target.  That's where the fast twist comes in.   A number I came up with that has been a constant performer is a bullet rpm around 43,600 rpm.  Do some research (this is a kick down a slippery slope for you) and tell me what you discover.  Grin
Greg
  

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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #29 - Feb 22nd, 2025 at 5:40pm
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GT wrote on Feb 22nd, 2025 at 3:56pm:
Wayne,
I feel like I'm hijacking the OP's original intention and questions, so this is my last injection here - but the faster twist our group of shooters are using benefits us more for stability rather than the energy concept.  
Greg


Greg,

I hear you & that makes sense for you & your type of competition.  But note that BPCR silhouette not only requires accuracy but sufficient bullet strike energy to reliably knock over the steel targets.  I have watched others & experienced it myself of hitting a 200M ram dead center & it refused to fall over with a 40gr bullet which left the muzzle at just under 1100fps.

If hitting paper or a gong was the main goal than I agree with you that bullet impact energy is a less importance.  BTW, 1100fps muzzle velocity results in 49,500rpm in a 16-twist bore.  Using your 43,600rpm minimum indicates that a 18-twist bore would work, implying that the standard 16-twist is more than sufficient.  Of course this assumes we are both talking about 40gr bullets.

Wayne
« Last Edit: Feb 22nd, 2025 at 6:19pm by texasmac »  

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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #30 - Feb 22nd, 2025 at 6:44pm
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Wayne,
That figure is calculated at target, not muzzle. 
Yes, the energy to tip them at 200 matters.  I've wrung a ram more than once, saw a chicken last weekend... 
G
  

"To invent, you need a good imagination and a pile of junk"  T. A. Edison
"The trouble ain't that there is too many fools, but that the lightning ain't distributed right" M.T.
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #31 - Feb 22nd, 2025 at 6:46pm
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I have a .22 LR CPA rifle and a .22 LR BSA Martini International MK II with a match chamber and short leade on a 16:1 twist barrel.

The CPA Silohuette stocked rifle is much better for practicing offhand however the BSA has won many 100 yard (target attached) and 50 BR bench matches using Tenex.
The CPA has a 17.2:1 twist and a long leade which allows cheaper ammo to shoot more effectively.
I also have a .40-60 Maynard barrel for the CPA for BPCR Silhouette matches.

The prone style stock of the BSA does not work well for offhand shooting.

« Last Edit: Feb 22nd, 2025 at 7:00pm by Schuetzendave »  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #32 - Feb 22nd, 2025 at 7:57pm
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GT wrote on Feb 22nd, 2025 at 6:44pm:
Wayne,
That figure is calculated at target, not muzzle. 
Yes, the energy to tip them at 200 matters.  I've wrung a ram more than once, saw a chicken last weekend... 
G


Since the standard formula MV X 720/Twist Rate = RPM only applies at the muzzle, any down-range formula would need a decay factor which is very small.  According to a test done several years ago at the Aberdeen Proving Grounds, a bullets spin decay rate is approximately 2% per 100 yds.  So, a bullet leaving a 16-twist bore at 1100fps (49,500rpm) would have a spin rate of slightly more than 45,540rpm at 400yds.

BTW, I've never found a published formula for calculating the down-range spin rate based on measurable muzzle velocity & bore twist.  If you have a one, I'd sure be interested.

Wayne
  

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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #33 - Feb 23rd, 2025 at 2:35am
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Where does that idea come from that a 14" twist must be appreciably slower than a 16" twist?  Losses will be negligible IMO, and a barrel longer than optimum will probably have more effect than the twist itself.
One could actually make a case of MV being higher because of the higher initial resistance and more pressure being developed.
Just found following article, yes it is not about the .22, but looks into the subject: (You need to Login or Register to view media files and links)
For the long range .22 game, some shooters are even using 9" twist barrels...
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #34 - Feb 23rd, 2025 at 9:54am
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MartiniBelgian wrote on Feb 23rd, 2025 at 2:35am:
Where does that idea come from that a 14" twist must be appreciably slower than a 16" twist?  Losses will be negligible IMO, and a barrel longer than optimum will probably have more effect than the twist itself.
One could actually make a case of MV being higher because of the higher initial resistance and more pressure being developed.
Just found following article, yes it is not about the .22, but looks into the subject: (You need to Login or Register to view media files and links)
For the long range .22 game, some shooters are even using 9" twist barrels...


So as not to confuse the readers here, that article is not about .22LR, but high velocity .223 & similar .22 caliber jacketed bullets such as those used in AR 15's & similar rifles.

Wayne
  

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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #35 - Feb 23rd, 2025 at 10:42am
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Wayne,

Thanks for the explanation. Makes total sense knowing the details.

Reminds me of the handgun silhouette game I shot often, called half size or half scale. Targets are IHMSA Field Pistol or half the size that are used in NRA BPCR at the same distances as the IHMSA Big Bore of 50, 100, 150 and 200-meters. The IHMSA and NRA targets are the same. But no offhand requirement (fortunately!)

IHMSA is a spin-off of the NRA High Power Rifle game. Those distances are the same as BPCR silhouette. The NRA rifle game requires 100% offhand. Elgin Gates and crew started IHMSA using the NRA targets, at shorter distances and different shooting positions and several gun categories (that’s a whole different bucket of worms!).

Tom
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #36 - Feb 24th, 2025 at 10:45am
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Oakdale, to clarify, the .22 silhouette game is derived from NRA Black Powder Silhouette. Think of the  .22 game as a short range version, using .22LR caliber rifles. Essentially, the .22 version uses the big bore Black Powder rules. We had to call the game something, so “.22BPCR” was chosen. FYI, I was one of the first .22BPCRA Directors. 
You can more info, including rules on the 22BPCRA site.
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #37 - Feb 24th, 2025 at 5:28pm
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Maybe someday I’ll acquire my first .22 rimfire rifle. Right now my first CPA centerfire is due to arrive next week….getting anxious!
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #38 - Feb 25th, 2025 at 7:17am
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rnnhntr wrote on Feb 21st, 2025 at 5:56pm:
Thank you for the input and keep it coming. I limited my initial information because I did not want to prejudice the conversation any more than necessary. I started out with a Cresnoe liner in my 1874 Sharps and am currently shooting BPCR matches with a Stevens 44 with a 24-inch barrel that I relined with a 1:16 twist TJ liner. Those rifles let me know that I like the game and have gotten me to where I can fairly regularly shoot high AA class scores. I usually shoot 2 to 4 on chickens and 9 or 10 on pigs, but fall off on turkeys and rams. I know that a new rifle does not make up for a lack of marksmanship, but it doesn't hurt. I mostly shoot scope, but also use the rifle in our local cowboy silhouette matches where I usually shoot in the high 20s. I do not find the shorter barrel to be a significant handicap with the irons. Most of the shooters at the matches I have attended here in Colorado or in Wyoming shoot CPA rifles, but the 1885 and clones are also popular, and both seem to be equally capable of winning matches depending on the shooter. I would like to have a low wall and a CPA 44-1/2, but can only afford one or the other. I have had good results using Lilja and Shilen barrels in centerfire rifles and will probably use one of the other on whatever, and probably with a 14-twist if I can do so. Since I am capable of doing so, I had originally considered buying an acton and building whatever myself, but I already have too many projects.

Both CPA & CSA can build you a wonderful rifle and both sell triggers that can be made to be truly excellent. The advantage for the CPA is that it is a DST, if something you prefer. The advantage to the CSA low-wall is that it is self-cocking  when cycled.
One thing you have not mentioned is ammo. If your scores are dropping off beyond the pigs it may well be the ammo your are using. See what ammo the winners are shooting. It will generally be the high-priced spread (Tenex, Midas+, etc.). You get what you pay for.........
One last thought. Go with a stainless barrel. It is much easier to maintain and retains it accuracy much long than carbon-steel.
  

Glenn - Stevens 044 1/2, Bartlein SS 5R barrel in 22LR
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #39 - Feb 25th, 2025 at 9:15am
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Glenn brings up an excellent point on ammo, just because it costs a bunch of money per round, and all the cool kids use it, doesn't mean your rifle is going to like it.
My wife's CSA lowall is a classic example of that, put anything Lapua or SK in that thing and you'll be better off shooting a 410 loaded with #2 bb shot. It likes Norma , and Eley. But we did find that with the Norma tac it will shoot bug hole groups out to the pig line, but beyond that it got dicey. It wasn't until resetting the rams at our rage here at home, some of the few that went over had bullet profile's in the paint. Our miroku built lowall is capable of master scores with SK rifle match, and my original Stevens was capable of breaking the cool kids hearts shooting Aquila rifle match, but unfortunately that ammunition has dried up.
Test different ammo at the 200 meter line on a windy day.

Triggers I really prefer a 2-3 lb crisp single trigger.
Lastly if the ammo you're using in your current rifle tests well on paper at 200 meters, then you might take a hard look at your spotter at the matches.
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #40 - Feb 25th, 2025 at 9:58am
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MartiniBelgian wrote on Feb 23rd, 2025 at 2:35am:
For the long range .22 game, some shooters are even using 9" twist barrels...

When you state ".22 game", are you speaking of 22RF?
And, what is "long range" distance if you are?
If you are talking about .22CF, I shoot my .223R with 80gr VLDs to 1000yd and they are still supersonic (don't go thru the trans-sonic region). And, I'm shooting a 1-8" twist, which is slow for many, if not most .223R shooters. I have a 1-7" barrel on the shelf when this one burns out so can shoot 90gr bullets. Some folks are shooting 1-6.5", as well. 1-9" tops out with 'some' 75gr bullets, but most don't go above 69gr in that slow a twist in my experience (been shooting competitively with a .223R for all of this century). Obviously, YMMV.
  

Glenn - Stevens 044 1/2, Bartlein SS 5R barrel in 22LR
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #41 - Feb 25th, 2025 at 1:22pm
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SSShooter wrote on Feb 25th, 2025 at 9:58am:
MartiniBelgian wrote on Feb 23rd, 2025 at 2:35am:
For the long range .22 game, some shooters are even using 9" twist barrels...

When you state ".22 game", are you speaking of 22RF?
And, what is "long range" distance if you are?
If you are talking about .22CF, I shoot my .223R with 80gr VLDs to 1000yd and they are still supersonic (don't go thru the trans-sonic region). And, I'm shooting a 1-8" twist, which is slow for many, if not most .223R shooters. I have a 1-7" barrel on the shelf when this one burns out so can shoot 90gr bullets. Some folks are shooting 1-6.5", as well. 1-9" tops out with 'some' 75gr bullets, but most don't go above 69gr in that slow a twist in my experience (been shooting competitively with a .223R for all of this century). Obviously, YMMV.


No, I'm talking .22LR, and distances out to 4-500 yds.  I recently saw 2 shooters with their rifles.  Curious, I asked what they were shooting.  The answer was RIMX action, Lothar Walther barrel (more like fencepost) with integrated tuner, with a high-tec scope with electronic cant indicator.  And no, I didn't take a picture.  Match ammo they used was Lapua (long range, super long range, center x), but that day they were training short range (100-200) with 'cheap' SK long range.
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #42 - Feb 25th, 2025 at 11:24pm
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Keep it coming, guys. Great information and thank you.
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #43 - Mar 3rd, 2025 at 9:30pm
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Might be a good idea to read the 22BPCRA rules before choosing a barrel. We don’t shoot under their rules my club so no personal experience. They say original barrels allowing liners or replacement barrel that duplicates original. Does duplicate mean twist too ?

Perhaps competitors shooting the game can clarify.

Boats
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #44 - Mar 4th, 2025 at 9:19am
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No it doesn't mean twist rate.
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #45 - Mar 4th, 2025 at 10:00am
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When it all gets down to where the hammer hits the primer, it doesn't really matter what the action is, High/low wall, CPA, hepburn, Stevens, pick what you like as far as looks and feels go. A good trigger pull is pretty much a must. The barrel is where all the good/bad things happen.
I have a martini that seems to have a very good barrel on it, the trigger is horrible but with the right ammo it will get things done out to 200. Its very important to test your ammo at 200. While things may look pretty good out to 150, those last 50 yards  can be a real game changer. I have shot groups at about 150 or so that I thought were pretty good, move out that last 50 and the wheels just fall right off. 
The barrel and the ammo is where its at, what action you pics is secondary, as long as its consistent.
Sam
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #46 - Mar 4th, 2025 at 1:55pm
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so  no bull barrels?  art
  
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Re: .22 BPCR Rifle: CPA 44-1/2 vs. CSA Low Wall?
Reply #47 - Mar 5th, 2025 at 10:08am
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I am not sure of the weight limits for the .22 game, but would think that they would be the same as for the center fire guns. If you put a 3.5 or 4 wiight barrel on a .22, that is a pretty stiff barrel. 
I have a 30" 3.5 taper barrel on my 44-77 Pedrosoli rolling block action. The rifle weights 10.5 pounds, reduce the bore to .22 and that should add 1/4 to 1/2 pounds to the weight. 
Having been the RO for a number of these .22 matches,  I feel pretty comfortable saying that most of the shooters will use rifles that are the same configuration and weight as their big bore rifles that they use in the BPCR matches.  Yes the chickens are only at 50 yards but they are pretty small and just as hard to hit as the full sized ones. Big difference is you have to chase them a bit farther when they are waked by a .22.
This game is one that everyone can shoot, come to a match, talk to the shooters, look over what they use. May someone will let you try a few shots, especially at the chickens. You might end up hooked. 
Like I said earlier. Pick the action you like. put a good  barrel on it, a proper match chamber and good sights and give it a try. Everyone should have at least one very good .22. If its good enough there a number of other games out there you can use is for.  Just because it has a hammer sticking out doesn't make it a bad gun for other games. Just makes it unique is all.  And wouldn't it be fun to shoot against all those fancy door latch rifles and win?
Sam
  
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