I use a 7mm-08. The pigs that I hunt are not that pig. I would guess live weight at around 200 lbs. The vitals in a pig are a little farther forward than in a deer. If you are going for a lung shot, you want to put one through the shoulder. I personally go for head shots. This is primarily because my shots are close and I am tryihg to minimize the meat loss.
I dropped a 300 lb Boar out here in NorCal with my .243, but it took four shots, including one about 1/2 inch below his left eye (only made him turn and charge me). I won't use that rifle for pigs again. Now I use a 300 mag if there could be some long shots where I'm hunting, or I use my 30-30 with some 220 gr. round nose handloads for dense brush work (shots out to 75 yds or so)
i've never had a problem with my 30-06. but ohio hogs max out at around 200 or so, unless raised in captivity..
the 30-06 falls right between the 300 win mag and the .308, so, for me, it's a good compromise between power and consistancy.
i'm even confident enough with that calibur to shoot 150 gr hornady interlok's, it's a small bullet, but it buried into the gristle plate, just under the skin of the opposite side of the nice boar hog i shot last november. can't wait to do it again!
The record books, that are put out by Boone & Crocket and Pope & Young and where I live is Henry Kelsey they are a great way to research a state or a province for big game. This does take some time but the knowledge it gives you, can be very valuable. Not all hunters have their trophies recorded, as where I live after the Hanson Buck became the new world record typical Whitetail, we saw a flood of hunters and now that has happened, some hunters are shying away from the record books but...