I've killed lots of hogs with a 223 Rem and 77gr SMKs running around 2,730 fps from various AR-15s and a couple of bolt guns. Head shots only with the 223 Rems.
Killed a few with my push feed Winchester M70 Featherweight 243 Win and 100gr CoreLokt. Killed a few with my bolt action 308s; Remington 700s and one 788, shooting 180gr CoreLokt. Killed some with various bolt actions in 7mm-08 with 162gr Amax, 7mm Rem Mag with 168gr VLD, 300 Win Mag with 180gr in Barnes TSX, TTSX and Rem CoreLokt, 215gr and 230gr Berger Hybrids but, by far killed the most with my favorites; Winchester M70 Classic 30-06, several of my Remington 700 30-06s and a Remington 7600 pump. In 30-06 I used FGMM 168gr SMKs, Remington 180gr CoreLokt, Barnes 180gr TTSX, Berger 215gr Hybrids and Hornady 212gr ELD-X.
I've killed a couple with my Winchester M70 Classic 375 H&H Mag but, don't remember if I used the Barnes 300gr TSX or the 350gr TSX. I've used 270 Win, 25-06, 6mm Rem, 30-30 and 35 Rem as well.
There were other rifles and cartridges I've used over the years, even killed a fair number with 12ga slugs and various sizes of buckshot... just can't remember them all.