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gnoahhh
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.25-20 SS Basic brass
Dec 25th, 2022 at 11:37am
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I recently discovered a small pile of Jamison .25-20 Basic Brass in my stash, which I'm pretty sure I got from Buffalo Arms years ago and then proceeded to forget about. The intent was to form Lovell wildcats out of it but the appearance of a Low Wall .25-20SS in my life scotches that idea.

Sitting here looking at it I'm struck by how this brass would make for a nifty cartridge if used as-is. Length is 1.790" vs. 1.650" of .25-20 brass, and case mouth is very close to .290" diameter making it compatible for .28 caliber cast bullets with minimal resizing.

I'm just wondering if anyone else had this idea and carried through with it. Of course, it's all a moot point since Jamison/Captech is defunct and I doubt I have enough of this brass to justify the hassle of creating a gun to shoot it, but to me it's an interesting concept.

Anybody else sitting on a stash of the stuff?

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« Last Edit: Dec 25th, 2022 at 11:50am by gnoahhh »  
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Cbashooter
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Re: .25-20 SS Basic brass
Reply #1 - Dec 25th, 2022 at 11:42am
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I have a box of 25-20 "basic" from B.E.L.L.
I'll see what length it is.
  
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ndnchf
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Re: .25-20 SS Basic brass
Reply #2 - Dec 25th, 2022 at 11:59am
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Its great for making .32 extra long rimfire or centerfire.  I've been collecting it whenever I can.
  
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waterman
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Re: .25-20 SS Basic brass
Reply #3 - Dec 25th, 2022 at 12:26pm
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Cbashooter wrote on Dec 25th, 2022 at 11:42am:
I have a box of 25-20 "basic" from B.E.L.L.
I'll see what length it is.


I had some of this stuff many years ago.  Anneal before you do anything with it.  Otherwise it will split.
  
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Skalkaho
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Re: .25-20 SS Basic brass
Reply #4 - Dec 25th, 2022 at 7:06pm
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Somewhere out there ,there is a guy that swages 223 brass to 25-20 SS.At a buck a shot,I guess there bombproof. Wish I'd known that back when I sold my gun.....
  
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jimh
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Re: .25-20 SS Basic brass
Reply #5 - Dec 25th, 2022 at 8:30pm
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Just before they stopped making it, I got 200. I was having a 17 Lovell made.  I've only formed 50 cases so far.  I've been keeping my loads on the light side not sure how strong the Jamison brass is. My plan was to do a switch barrel and also do a 22-3000 , using 100 cases for each. Now that the brass isn't made I'll just stick with the 17 Lovell.
  
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rgchristensen
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Re: .25-20 SS Basic brass
Reply #6 - Dec 25th, 2022 at 9:34pm
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All my 25-20 SS is made from 223's.  Much more durable than the original stuff.   Sometimes you have to turn the necks a little.  If I didn't have the big South Bend, I'd buy a little table-top lathe to use for making cartridge cases.

25-20 SS is a great small-game and plinking ctg.   Right now, I am having a lot of fun with a 25 RF/CF, making the cases from 22 Hornet.

CHRIS
  
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GT
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Re: .25-20 SS Basic brass
Reply #7 - Dec 25th, 2022 at 9:40pm
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gnoahh,
I have some of the Jamison brass and I kind of hoard it for the 25-20SS but I did get the procedure from uscra112 for making cases from 223.  I've done quite a few and even took it to the next level, nibbing it to make 25-21SS.  Never thought about using it in some form of 28 caliber.  I have a new to me action coming and I have a 28 cal blank screaming for something to be done with it, may try it.
Thanks,
Greg
  
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gnoahhh
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Re: .25-20 SS Basic brass
Reply #8 - Dec 25th, 2022 at 10:48pm
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rgchristensen wrote on Dec 25th, 2022 at 9:34pm:
All my 25-20 SS is made from 223's.  Much more durable than the original stuff.   Sometimes you have to turn the necks a little.  If I didn't have the big South Bend, I'd buy a little table-top lathe to use for making cartridge cases.

25-20 SS is a great small-game and plinking ctg.   Right now, I am having a lot of fun with a 25 RF/CF, making the cases from 22 Hornet.

CHRIS


Chris, I'm gearing up to swage .25-20SS brass out of .223's too. I have some thoughts on the matter and will call you directly to discuss, and maybe swing by personally to pick your brain. In the meantime, I wonder what the "raw" length of the swaged brass is, before final length trimming and final shaping in the .25-20 die is - pursuant to using it "as-is" for a new .28 straight walled wildcat such as I described above.
  
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uscra112
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Re: .25-20 SS Basic brass
Reply #9 - Dec 26th, 2022 at 2:15am
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According to something I read quite a while ago, Rabbeth's first wildcat based on the parent .30 Wesson case was indeed a 7mm, but he felt that it did too much damage to the game, so he necked it down.  

Captech brass stood up to being converted to .22 Lovell just fine.  Never even annealed it.  No worries about strength.  It is considerably heavier than the old OEM .25-20 brass, so Lovell loads had to be backed off a full grain.  Ironically, the thinnest Lovell brass I've found is the G&H stuff. They wanted all the powder space they could get, I guess. 
  
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Re: .25-20 SS Basic brass
Reply #10 - Dec 26th, 2022 at 10:13am
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OK, I guess it’s time for me to get a detailed set of instructions for reforming 223 to 25-20 SS.  It’s not like I can’t find all of the 223 I could ever use, and I already have plenty of it converted to 300 Blackout, so I have plenty to spare, and with the ridiculous cost of feeding my two 25-20s…  Roll Eyes
I have a lathe with collets even including a couple of new (unground) pot chuck collets.  With beginner level machining skills, is this process something I should be able to accomplish?  I certainly have plenty of 223 brass to practice on!  Cool

Froggie
  
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Re: .25-20 SS Basic brass
Reply #11 - Dec 26th, 2022 at 10:43am
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PS to last:  I should have mentioned that I have a couple of the old Lyman/Ideal sizing dies made to be used with a vise or arbor press. Will they be of any use in this process?  Huh
Froggie
  
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Skalkaho
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Re: .25-20 SS Basic brass
Reply #12 - Dec 26th, 2022 at 11:27am
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Heres info to do the brass......


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rgchristensen
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Re: .25-20 SS Basic brass
Reply #13 - Dec 26th, 2022 at 12:21pm
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Having looked at some of the swaging methods offered, I'd say that I think my method of turning down the web of the parent case BEFORE any swaging makes it easier to swage and gives a better end product.  Section a case and look at the metal in the web and you'll see how much needs to be removed.  Then it is just a matter of pushing the remaining metal into "where it SHOULD be".  I use a small arbor press for this, tho suppose that a common loading press could be adapted.

Having sized the case to its final shape, seat a bullet and compare the neck OD to a chamber cast and determine how much to take off to give the proper neck clearance in the chamber.  I aim for 0.002", but concede that there are different opinions on this.

CHRIS

  
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uscra112
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Re: .25-20 SS Basic brass
Reply #14 - Dec 26th, 2022 at 3:01pm
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Chris, perhaps you could post closeups of a case you've turned, prior to swaging, and a sectioned case after swaging? 

Phil
  
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