I used a 380 with Hornady hollow points to dispatch an elk I hit with a van. One shot behind the ear, done.
I don't want to try the grizzly vs 9mm trick. Phil Shoemaker, I am not. I'll take my 45 colt and 285gr cast bullets cruising along at about 1000fps. I can shoot it in a hurry if I need to.

Stupidity is expensive
If you find yourself in a fair fight, your tactics suck!