To be honest I have very little respect for the opinions of people who lord the .32acp over the .32S&W Long because there isn't THAT much difference between the two rounds performance wise...anybody who thinks that extra 135 fps turns the .32ACP into a much more superior round is at best ignorant and at worst just being an ass.All this talk about .32 long. If I'm going to get wimpy, I'll go with a NAA Black Widow in .22 mag, just as effective, or at least has the potential to be just as effective, maybe more effective with the new Hornady .22 mag personal defense ammo designed for sub 2" barrels, if and when that stuff hits the market. My Black Widow is 3.5" at 25 yards accurate off the bench and shoots well off hand. Has a folding holster grip on it, Novak sights, and is tiny compared to my Taurus 85 or a J frame.
.22 mag from a 2" barrel puts up about 90-100 ft lbs. Best .32ACP from a small pocket gun puts up similar. .32 long really isn't loaded in great variety anymore with modern ammo, at least I don't think so. I wouldn't expect it to be as effective as .32ACP shooting modern .32 JHPs.
Hell, if I'm going to get THAT small, I'll take the .22 mag. I really do prefer my .38 or 9x19, though.
S&W Long: 90 gr LSWC 765 ft/s 117 ft·lbf
.32ACP: 71 gr FMJ 900 ft/s 128 ft·lbf
I also have to question the validity of anyone's opinion who actually recommends a single action five shot .22 MAGNUM over a double action six shooter chambered for .32S&W Longs.