My point is that if you go out under gunned, you will eventually lose a hog. Period. Treat 'em with some respect as the big game animal they are. That doesn't apply to where they are a nuisance. Shoot 'em with what you've got and kill all you can.
Having personally witnessed a 7mm mag round bounce off, a 165 Sierra GameKing out of a .300 Weatherby splash off the shield and having shot one a LOT with a 22-250 I'll stick to the tried and true deep penetrating large caliber stuff. I try not to make my game animals suffer needlessly. You do what you want.