i would recommend shooting them from the front shoulder forward, in the neck head area. I shot one too far back once, I mean I centered punched 'em with a 30/06. Had to track him 150 yds. in the thick south Tx. brush, no fun. At least he was dead when I found him. Heart lung area lies lower and a bit forward on hogs. I have known people to shoot them thru the shoulder or behind the shoulder an kill them. And then again I've known them to run a ways with that shot. Have a friend that shot one with a 223 WSSM behind the ear at 260 yds and it was DRT. Try for a neck head shot if you can get it and you shouldn't go wrong.