Just to continue along this line of thought, the 32 ACP round is semi-rimless so it CAN also be used in the 32 S&W Long chamber, but some debate occurs over whether it is a good idea or not. If I were running low on ammo and didn't have time to hit the loading bench, I would definitely exercise this option to keep shooting. Just for the sake of enlightenment I took my Prolect 616 (K-frame 327 FM) and shot it one cylinder after another with 32 ACP, 32 S&W, 32 S&W Long, 32 H&R, and 327 FM. Although it worked fine, I wouldn't expect pinpoint accuracy or even similar POI with the widely disparate ammo variants, but it will work and go bang.
Froggie