By Greg Ellifritz Alternative view of stopping power, it seems for handgun rounds that 32 ACP produces the highest % actually incapacitated by one shot with the 2nd lowest number of rounds fired.

Higher accuracy, better head or torso shot potential accuracy and very high end of fight potential.

I have shot 32 ACP and can say using a Walther PP it was amazingly accurate though the trigger was heavy and sights hard to see.

A fast shooting accurate small caliber gun might be the best on paper.