I've taken hundreds of hogs in 43 years of hunting & trapping them, the most recent being this evening. (150 lb sow, 30-06). I've killed them with a bow, a knife, .22s, 12 ga., 243, .357, 6.5, 30-30, .35 Rem, .308, 7mm08, 30-06. .300 Weatherby mag, & .300 Win mag. .50 cal BP & probably some in between. Many were taken alive using dogs. Many in a trap. I've been chased up trees, run over, slashed, and bitten. I've had catch dogs killed & maimed. For serious hog hunting, I do not carry less than a 7 mm and prefer a 30-06. I carry a .357 mag when using dogs or removing hogs from a trap. I would not even consider a .223 for a trophy hog hunt.