The 32 auto was designed with a semi-rim so that it could be chambered in small revolvers. The Browning 38 ACP, which the 38 Super was based, was designed with the same dual-use capability but I don't know if any such revolvers were ever produced.amd65 said: ↑
if you get to heaven, you can ask John Browning why he designed the 32acp that way.
Ha, ha, ha.
Wonder why he did. I'm sure there is a story there. Are .380 and .45 identical in design to each other? Did the .32 come first?
Wonder some extraction issue he was designing for, then figured a better way. But if the .32 came last of those 3 then a whole new mystery.
That Luger guy seemed to get the 9mm right
(Not really a caliber comment, just only referring to the shell and function in the gun).
Interesting. Didn't realize those cartridges have been around so long particularly the 32 acp.32 acp - 1899
45 acp - 1904
25 acp - 1905
380 acp - 1908
The 25 acp is also semi-rimmed so maybe the smaller cartridges don't have enough for the extractor to grab if they are rimless.
That looks very functional. I actually went the opposite way and UNDID some rubber grips. On my 642 I took the rubber grips off and replaced them with some old wood ones, which had a similar shape (not the little pinkie-sized original ones) to keep the grip smooth and not tacky. It is MUCH less pleasant to shoot, but I carry it much more than I shoot it. It has been shot enough that am both fully confident in it, as well as my capabilities with it (over 1000 rounds). I also reduced the left side in order to have better access for my speed loader (even though I normally use Speed Strips).This is a P3AT pictured but wanted to show the grip cover I made. I dont like the recoil, nor the grip of this gun. Its an inner tube with some quarter inch self adhesive padding. I like it a lot better than the original.
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While some cheap pocket revolvers, mainly European, were eventually chambered in 32acp, that was not why the cartridge had a semi-rim.The 32 auto was designed with a semi-rim so that it could be chambered in small revolvers. The Browning 38 ACP, which the 38 Super was based, was designed with the same dual-use capability but I don't know if any such revolvers were ever produced.
The 32 Auto can be fired in any gun chambered for 32 long, 32 H&R, and even 327 Federal and has enough of a rim to facilitate extraction.
As I mentioned earlier, I've fired 32 auto in a Walther PP, a Beretta Tomcat, and a Keltec P32 and never experience any feeding problems. However, with the Walther and the Beretta, I only fired 50 rounds or less, where with the Kel-tec, I used to fire anywhere from 50 to a hundred round every month or two for several years and never had a single problem.
Ok, then why DID the 32 ACP, teh 25 ACP and the 38 ACP have semi-rims? The 38 ACP was specifically designed for the Browning-designed Colt Model 1900 which was a different gun than the FN 1900.While some cheap pocket revolvers, mainly European, were eventually chambered in 32acp, that was not why the cartridge had a semi-rim.
The cartridge was specifically designed for the Browning FN 1900, and I’m not aware that Browning ever gave its use in a revolver any consideration.
Again, browning designed these cartridges for his automatic pistols. He did not design them for dual use in revolvers. Remember, this was cutting edge technology. I’m sure there were fudds who didn’t trust the newfangled auto pistols, and thought a revolver chambered for the “hot new load” would be the bees knees.Ok, then why DID the 32 ACP, teh 25 ACP and the 38 ACP have semi-rims? The 38 ACP was specifically designed for the Browning-designed Colt Model 1900 which was a different gun than the FN 1900.
What similarities did the FN 1900 and the Colt 1900 have that necessitated the semi-rim?
And as far as the dual use, there wee many oddball small caliber revolvers produce in the early 1900's such as the French 5.7 Velo dog revolver which might also explain the semi-rim on the 25 ACP since The Velo Dog pistol was also available in 25 ACP.