Just remember, if anyone tells you the .32 S&W Long (or .32 ACP, .380, etc.) are inadequate, that they all beat hell out of a rock or stick if that is all you have. Same goes for .22 LR or .25 ACP!
Part of the trick in a legitimate self-defense situation, is you don't shoot once and wait to see what happens, you shoot as many times as necessary, as fast as possible with accuracy, to eliminate the threat. If this happens with one shot good, but if it takes a full cylinder or magazine, or even a reload, to get the job done thats how many times you shoot. This applies equally to .357, .44 Mag. .45 ACP, etc. as well as it does to what are derisively referred to as "Mouse Guns".