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Hot Topic (More than 10 Replies) CPA vs Low wall...pro and con ? (Read 1122 times)
Skalkaho
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CPA vs Low wall...pro and con ?
Aug 25th, 2024 at 11:14am
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I'm going to build up either a CPA 44 1/2 or a Low wall Helm with DST's.  for a 32-20 BR gun.  Never shot a CPA,have owned a couple low walls and really like them. Flat spring  cant change out barrel that quickly as a CPA.The CPA you can do a 25-20 /32-20  and just open the lever have the extractor all the way back and do a quick barrel change. Any comments? breech seating,etc ? thankyou
  

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RSW
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Re: CPA vs Low wall...pro and con ?
Reply #1 - Aug 25th, 2024 at 12:30pm
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I have more of a question back-at-cha rather than a recommendation. Is a Win Low Wall action strong enough to handle a .32-20? Assuming you intend to chamber for the CPA .32-20 (or some variation thereof), i.e., .32 cal barrel and rifling twist to handle 200+ grain bullets.
  

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Schuetzendave
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Re: CPA vs Low wall...pro and con ?
Reply #2 - Aug 25th, 2024 at 2:26pm
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Pete:

The CPA, or a Stevens 44 1/2 or 1885 HighWall are of suitable strength for pressures for any 32-20 load.

The LowWall is more suited for smaller calibers.

Even my .25 RKS shooting at 1,826 fps in a HighWall had pressures similar to a .30-06 and would be too much for a LowWall.

You may only shoot low pressure loads but what happens if a second owner tries to shoot hotter loads?

Dave

« Last Edit: Aug 25th, 2024 at 2:41pm by Schuetzendave »  
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frnkeore
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Re: CPA vs Low wall...pro and con ?
Reply #3 - Aug 25th, 2024 at 4:28pm
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I'd probably choose the 44 1/2 for 200+ gr 32 cal bullets but, with a .308 barrel, you could shoot all day with 150 gr bullets. It would make a great OH rifle, with that combo.

In defense of the LW, some people feel the LW is only good for 22rf. I'm not one! My LW is chambered for the 357 Max (I call it 38 XL) and while I wouldn't recommend it, I have shot a 358315, 208 gr bullet @ 1800+ fps and a 146 gr H&G GC bullet at 2100+ fps, both loads using WC820. My BSed load is 35875 with 14 gr 4227.

I will add that, the barrel on my rifle, has a factory 32cf, rebored with a 20 twist.

  

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Skalkaho
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Re: CPA vs Low wall...pro and con ?
Reply #4 - Aug 27th, 2024 at 9:20am
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I was told that MVA was going to start producing the low wall also. If the Browning low wall can take a 260 and 243  caliber...figured the MVA would be built just as strong. Well no word  back from MVA so ordering a CPA action,might as well have one in the stable....thanks guys.
  

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RJ-35-40
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Re: CPA vs Low wall...pro and con ?
Reply #5 - Aug 29th, 2024 at 10:04pm
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Randy,

I appreciate your precautionary perspective on the LowWall. I have a CPA in 32-20 that likes the 208 grain  just fine.

I have a graph that 'someone' prepared showing which cartridges that a Low Wall could handle. Apparently this 'someone' had the max pressures for each cartridge and plotted them on this graph.
I realize this is nothing more than talk but at least once I can get to it, it will be a visual aid starting point. 

I am traveling at the moment so I don't have access to my computer with the graph but when I get home Tuesday or Wednesday I'll try to find it and post same here.

That being said I wonder if the "new" Low Walls by Uberti etc. are not substantially stronger than the originals. I hope they are because a few years back I bought a Uberti Low Wall that has been re-barreled in 32-40. It is a 12 twist which will stabilize the 200 grainers. 

The strength of the Low Wall is an interesting subject.


RSW wrote on Aug 25th, 2024 at 12:30pm:
I have more of a question back-at-cha rather than a recommendation. Is a Win Low Wall action strong enough to handle a .32-20? Assuming you intend to chamber for the CPA .32-20 (or some variation thereof), i.e., .32 cal barrel and rifling twist to handle 200+ grain bullets.

« Last Edit: Aug 29th, 2024 at 11:06pm by RJ-35-40 »  
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RJ-35-40
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Re: CPA vs Low wall...pro and con ?
Reply #6 - Aug 29th, 2024 at 10:22pm
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What is a "Helm" 
Is that a person or ...?

Thx.. Bob
Skalkaho wrote on Aug 25th, 2024 at 11:14am:
I'm going to build up either a CPA 44 1/2 or a Low wall Helm with DST's.  for a 32-20 BR gun.  Never shot a CPA,have owned a couple low walls and really like them. Flat spring  cant change out barrel that quickly as a CPA.The CPA you can do a 25-20 /32-20  and just open the lever have the extractor all the way back and do a quick barrel change. Any comments? breech seating,etc ? thankyou

  
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bpjack
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Re: CPA vs Low wall...pro and con ?
Reply #7 - Aug 29th, 2024 at 11:45pm
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Here you go Bob

(You need to Login or Register to view media files and links)

Helm style stock
  

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RJ-35-40
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Re: CPA vs Low wall...pro and con ?
Reply #8 - Aug 29th, 2024 at 11:55pm
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Jack,

Thanks for the picture and post.
Very nice indeed...

Bob

bpjack wrote on Aug 29th, 2024 at 11:45pm:
Here you go Bob

(You need to Login or Register to view media files and links)

Helm style stock

  
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Pentz
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Re: CPA vs Low wall...pro and con ?
Reply #9 - Sep 6th, 2024 at 2:17am
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A word re the 32-20 or similar rounds in the MVA HW; with the scope mounted on mine my fat fingers cannot breech-seat feed or extract the case.  Had to make a case holder out of 3/8" clear tubing with a push rod seater.  Ejector is a half mooned flat screwdriver with bent tip.
  

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RJ-35-40
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Re: CPA vs Low wall...pro and con ?
Reply #10 - Sep 6th, 2024 at 1:44pm
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Jack,

Not nearly as nice as yours but I thought I would post a picture of my replica Low Wall in 32-40. (12 twist)

I don't know if the lack of the top prong still qualifies this stock as a "Helm" type.

PS, I'm a old school dinosaur, as such I still have to learn how to send a picture in the correct format. 

bpjack wrote on Aug 29th, 2024 at 11:45pm:
Here you go Bob

(You need to Login or Register to view media files and links)

Helm style stock

« Last Edit: Sep 6th, 2024 at 4:50pm by RJ-35-40 »  
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bpjack
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Re: CPA vs Low wall...pro and con ?
Reply #11 - Sep 6th, 2024 at 2:19pm
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I wish that were mine.  I found that image with a Duck Duck Go Search.
  

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Skalkaho
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Re: CPA vs Low wall...pro and con ?
Reply #12 - Sep 7th, 2024 at 12:10pm
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I was told by Keith Kelbly that MVA was going to or was making the low wall also. As it is I never got a reply to my email  or my phone call i left.  At least a " not making them yet  or in the future "  ?   would of been  good enough for A reply.  In modern steel  A MVA low wall would be able to handle the 32-20, nuff said.
  

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Chuckster
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Re: CPA vs Low wall...pro and con ?
Reply #13 - Sep 7th, 2024 at 1:06pm
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My understanding is the modern Low walls are a different design from the original. (Have not seen one)
They have raised the receiver shoulders behind the breech block to be about in line with the centerline of the bore.
That and improved steels would make a large difference in the strength of the action.
Chuck
  
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