9mm. Shhheeeeeeeeet fire, Bobert. That puny little round ain't good for much more than squirrel shooting. IL State Police a while pack shot 28 out of 30 rounds of 9mm into a PCP-ed up biker and he kept comin'. Had to put him down the old fashioned way, with a 12 gauge. Even your +P+ rounds don't have the stopping power of a .357 magnum.

Of course, guns with REAL stopping power also have more recoil, so those that use them tend to be folks who really KNOW firearms.

However, in the long run and dealing with reasonably sane, undrugged, folks a .22 is as good as a 12 gauge: nobody in their right mind wants to the get shot. Besides, shooting someone can simply ruin your day.

Keep yer guns at home boy, don't bring yer guns ta town boy....