Wow boys this does not need to be so angry. I love head and neck shots on hogs that I am keeping for meat or wanting to show the boys at the lease. That being said my primary hog gun is a suppressed .17 HMR. I take only head and ear shots with it out to 100 yards. It is a laser shooter.
So the original question was will a .243? Yes. Head and neck saves meat too. But shot placement is key on any game animal. I don't take body shots on hogs unless I want to eradicate the lease being overrun and don't need the meat.

i hear bullets bounce off their skull as well. but i have no problems with my 22 super duper magnum.

Yep, one of the places i often hunt bans the use of centerfire rifles outside of deer/elk season. i've killed a few dozen wild hogs there using a .22 magnum.

243 is fine

Stick it in his ear or forehead. Night night, termite.

In my experience (and I've shot quite a few) you can shoot a hog with just about any type of rifle if you shoot them behind the ear will drop them. I shoot them with 7 mag...