![]() ![]() I saw it while helping out in a LGS in the late 80s.Ī gentleman came in saying he had purchased ammo at a local non-gunshop, and it just wasn't right in his gun. It wasn't long before others proved that the case mouth would do a far better job at headspacing cartridges, so the semi-rim was something of a dead end.īut, sorry, I don't buy that it was done on purpose to allow the cartridge to be used in Colt revolvers.ģ8 ACP, and 38 Super will fit in a 38 Special, and a. So, he had to figure out how to headspace the cartridge without a shoulder, thus a rim just large enough to allow headspacking, but not large enough to interfere substantially with feeding from the magazine. Yep, Browning introduced the first successful straight-walled cartridges for a semi-automatic handgun. 25 ACP), the ONLY way semi-auto cartridges were being headspaced in the chamber was on the cartridge's. 32 ACP (his first cartridge, IIRC, followed by the. At all.īrowning brought out his first semi-rimmed rounds in the infancy of the autoloader era.Īt the time he introduced the. None that I've ever heard or seen, and I really don't buy it. Never heard that before, and it doesn't explain Browning's other semi-rimmed rounds wonder if there's actually any documentation to support it?" ![]() 38 Colt revolver, which was government issue at the time, in a pinch. 38 Auto was so the round could be used in a. "Not to get too far afield, but I read something recently, that the semi-rim on the. 380 didn't have the semi rim, since it was proven it wasn't needed.Ĭan't say its true, but won't say its not, I find it much more plausible than him putting a rim on his case design so it would possibly work in a revolver. After the 9mm Luger (1902) proved it would work, the pistol rounds Browning designed after that, the. According to gun folklore Browning wasn't convinced that headspacing on the case mouth would be sufficiently reliable, so he put a small rim on his cartridges. 38 all have it, and all were designed before, or at the same time as the 9mm Luger. If you look at all Browing's early cartridges they all have the "semi rim" design, the. I doubt you will find any supporting documentation, it sounds like BS to me. Never heard that before, and it doesn't explain Browning's other semi-rimmed rounds wonder if there's actually any documentation to support it? Not to get too far afield, but I read something recently, that the semi-rim on the. Congratulations finding some ammo for the uncommon round! I missed this thread the first time around. ![]()
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