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.