It still boils down to the ammo you uses and shot placement.
Because some people have never been shot with 9mm.
Because some people have never been shot with 9mm.
Because people on the Internet say that 9mm is inadequate, therefore it's true.
9mm may or may not expand 100% of the time and the same goes for 40s&w, but a 45 will never get smaller.
Thanks
Bahbo
all pistol calibers suck. 9mm/.40/.45 might as well be the same when someone is hit with them. plus side for the 9mm is higher capacity and easier to get back on target after the shot (this is from my personal experience with these calibers, ymmv). end of the day, it all boils down to what you like to use