Congrats to your son on a fine shot on a nice buck. I like others have mentioned would look for something more controlled in the expansion department. I love the Barnes TSX bullets though they're expensive they're great for reliability It can be rough to find the perfect bullet these days. Ammoseek is a good source for loaded ammunition as well. I know of plenty of wild hogs that have been killed with 55grain .223 loads so don't overthink it on the hogs unless you get into a big old boar you'll be fine.