Would be more worried that someone or some dog gets shot. If you are using dogs, then you are going into a very tough shooting environment for a shotgun. Unlike driven deer (for which buckshot is a terrible, however traditional, choice in the thicker parts of the South) you will likely be looking at an active, angry animal at bay with dogs bouncing around him. It is very difficult to slip either a hand gun or rifle bullet through such a melee. A slug would be fine. Shot will put a lot more than the hog at risk.
