Bob, It's been my experience that pigs are not anywhere near as hard to kill as the TV would have you believe. My 7 year old nephew just killed one late last summer with his daddy's AR-15 with cheap FMJs. I have seen, not just heard of, hogs taken with handguns, rifles, and shotguns running the range from .22LR, to 9mm pistol, to 12 gauge. I think like anything else, shot placement is more critical than anything. I have shot them in textbook heart-lung shots and they ran 50 yards or more. And I have shot them in the head from 100yds and they dropped like a sack of taters.
Armorer