>>>>.40 S&W is the answer to a question nobody should have been asking. :P
It’s the FBI round, isn’t it?
The second attempt. 10mm was the first attempt, and that didn’t pan out so well - it broke pistols. The .40 S&W is lower power...
Problem is... a 9mm isn’t all that much less effective, and a .45 doesn’t really have that much more recoil. So what’s the point of the .40?