Naw, Chris just kidding, the one and only hog I have killed was with a 7X57. Can't remember the exact load, but it was a 139gr Sierra over a charge of IMR 4895. He dropped in his tracks. I was deer hunting at the time. Here, pigs are not a game animal, so they may be taken durring open season for any game animal with whatever weapon is legal for that species. What it amounts to, is durring deer or bear season when a centerfire weapon is legal in the woods, they may be taken with that. You can kill them durring small game season as well with what ever is legal then. Like a 22 rimfire or a shotgun with no larger than #4 steel shot. A 22 would not be my first choice, but durring small game season it is my only choice. I don't hunt them myself, but lots of guys kill them every year with rimfires.
Stay Safe,
Savage