I've shot LOTS of hogs with a .243! Oh wait that's just wishful thinking. I haven't shot ANY hogs with ANY gun as of yet.
I have however shot plenty of deer with a .243 in my youth hunting years and honestly when I moved up to a .308 when I turned 17 I wondered why I hadn't started with a .308 period. To me the recoil on a .308 isn't too much more than a .243 and it certainly isn't too much to handle. I'm not a big guy either - 5'10" and 180lbs.
That said I'd say a .243 is good for hogs so long as you put the bullet where it counts.
This is who we are, what we do.