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Old November 12th, 2011, 09:12 PM   #1
Enzo_Guy
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.32ACP in a .32 S&W Long

I am having trouble finding .32 S&W Long locally, but I have boxes of .32ACP all over the place. The .32ACP is a semi-rimmed cartridge and fits the cylinder, but since they are FMJ rounds I worry about putting them down the barrel of my old Police Positive.

The pressure is an interesting discussion, as even though there is a max pressure for the .32 S&W Long casings, a lot of old reloading data predating the .32 H&R Mag shows guys hot rodding the .32 S&W Long past .32ACP velocities (over 1000fps) and shooting them in the old Smiths and Colts (the beefy full-frame .38 models that were chambered down to .32). These velocities would put the casing into .32 H&R territory, which operates at a similar pressure to .32ACP. So, as long as the rim and headspacing are there, couldn't the gun theoretically handle these pressures if the old reloaders that were really dialing up the heat in the .32 S&W Long were doing it safely?


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Old November 12th, 2011, 09:17 PM   #2
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No, never.... Bad idea.


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Old November 12th, 2011, 09:19 PM   #3
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Not at all sure about the pressures, but Midway has .32 S&W Longs in Lead Round Nose. I would go with those.


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Old November 12th, 2011, 09:41 PM   #4
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Don't do it. They are not interchangable.

The notes below are stolen from another forum.
Nominal bullet diameter of the .32ACP is .311". The .32 H&R Mag., .32 S&W, .32 S&W Long launch .307" bullets. The revolver cases are straight sided .337" tubes, the .32 ACP tapers from .337" to .336" at the mouth. The ACP rim is nominally .357", the revolver case rims .375".
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Old November 12th, 2011, 10:53 PM   #5
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Buy the .32S&W brass in the classifieds and reload.


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Old November 13th, 2011, 04:50 AM   #6
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The 32 S&W Long has a very low SAMMI pressure level in deference to the remaining 19th century guns that were junk even when new. The .32acp pressure while relativley higher , is still pretty low in the overall sense. The Police Positives were decently strong guns Pressure wise you would be within the guns capabilities.

The potential issues would be long jump to throat, and minium spec ammo generous chambers "might" have issues with consistant ignition or extraction. So while if you give careful consideration , and make adult decision to do so , restrict it to recreational shooting , and not SD.

Of course the proper ammo IS available. Probably not at Wally World , or the corner store , it is avalable from all the usual mail order/ online sources. And excellent ctg to handload.
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Old November 13th, 2011, 07:43 AM   #7
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.32 S&W Long is a revolver cartridge. .32 ACP (Automatic Colt Pistol) is a self-loading pistol cartridge. Don't even think of mixing them.

Revolvers chambered for .32 S&W Long will also shoot .32 S&W, .32 Colt New Police, and .32 Colt Police Positive.

There are lots of places online selling .32 S&W Long. I bought two boxes of Sellier & Bellot .32 S&W Long LRN at The Gun Shop in Essex. Call them, and call FreeState Gun Range too.
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Old November 13th, 2011, 08:34 AM   #8
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Hafer's sells it as well.


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Old November 13th, 2011, 08:51 AM   #9
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This wasn't meant to be a discussion on where to find .32 S&W Long, I have plenty of brass from it. Back in the '50s and '60s a lot of people used to talk about using the .32ACP in .32 revolvers. Seen it in a few gun magazines but now I can't find any references to what I read.


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Old November 13th, 2011, 09:52 AM   #10
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Quote:
Originally Posted by Enzo_Guy View Post
Back in the '50s and '60s a lot of people used to talk about using the .32ACP in .32 revolvers. Seen it in a few gun magazines but now I can't find any references to what I read.
Are you talking about the cylinders you can get for Nagant revolvers that let you shoot .32 ACP in them?
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Old November 13th, 2011, 10:08 PM   #11
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While the .32acp is an autoloader ctg , it (along with .25acp and .38acp/ .38Super ) are semi-rimmed.. The .25acp has no analog. The .38 Super will fit in .357 mag chamber, albeit slightly loosely., and at lower than .357 full power pressures. Might have extraction issues in DA rev , and might swell enough to be difficult to .38 Super dimentions.

* whenever ctg is different than gun , if used at all , give careful thought , adult decision making , and no whining. *
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Old November 13th, 2011, 10:23 PM   #12
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Quote:
Originally Posted by GNLaFrance View Post
Are you talking about the cylinders you can get for Nagant revolvers that let you shoot .32 ACP in them?
No, this is specifically using .32ACP in Colt and S&W revolvers chambered for .32 S&W Long.


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