RE: Queston for you guys......
You should be fine with anything fromone of the.22 centerfires on up; just stay away from fragmenting (varmint) bullets. Shoot 'em in the head or the vitals, & you'll behaving sausage. Like any kind of hunting, be sure of your target & beyond, and be sure you're going to connect before you press the trigger. Hogs don't deserve to be wounded any more than any other animal does.
I'm heading to South Georgia in 15 days, and I'll be taking an AR-15 with 64 grain soft points from Federal, and a 7x57 with 173 grain soft points.
As for hunting, you can still-hunt 'em, or use dogs, or what have you. In the swamps where I'll be, we've had good luck with slow stalks. Look for movement, listen for sounds, & stay downwind of 'em. We took 8 hogs last year with no shots over 40 yards. Your area may be drastically different, though. It's my understanding that you'll seldom find hogs very far from water.
You do need to be warned, however, that hog hunting becomes positively addicting!
Good Luck!
FC