New pistol cartridge idea


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CrawdaddyJim
November 11, 2007, 03:28 PM
Has anyone ever seen or tried to form a 357/45 acp or maybe a 32/45acp?

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ReloaderFred
November 11, 2007, 03:39 PM
The .38/.45 has been around for many, many years, and was quite popular in the late 60's and 70's. It's not a new idea at all. RCBS and others sell the dies for forming the brass and loading the ammunition.

Going to .32 with the .45 acp would be difficult, given the short length of the case. The shoulder would be very steep and there wouldn't be enough neck to hold the bullet during cycling of the action.

I regularly form .400 Cor-Bon from .45 acp brass and still get a wrinkled case once in awhile, especially if using fired brass. It's not so bad with new brass, if you use thicker brass from Winchester or Federal.

Hope this helps.

Fred

CrawdaddyJim
November 11, 2007, 03:58 PM
I have a bunch of cartridge books. Cart of the world etc... And did not see it in any of them. I kinda knew that there is nothing new in this world.

rcmodel
November 11, 2007, 04:35 PM
The 38/45 Clarke was developed by Bo Clarke for NRA bullseye centerfire match shooting in the early 60's.
http://www.reloadbench.com/cartridges/w3845auto.html

It would reliably feed light-load lead wad-cutter target bullets in a converted 1911 match gun because of the bottleneck case design.

It later was thought of for high performance after JHP bullets became available in the 60's/ 70's. Dean Grennell of Gun World magazine became a big fan of it or something very similar for hot-loading the 1911 with very fast light JHP bullets.

It was always limited to +P .45 ACP pressures by the 1911 feed ramp cut & unsupported chamber. The ramped barrels now so commonly used for hot calibers in the 1911 had not been invented yet. As a consequence, velocity was not much different then what you could easily get out of a .38 Super.

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rcmodel

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