I shot a good sized Wild Russian Boar (about 235 lbs) in Vermont with .444 Marlin (240 grain JHP) at about thirty yards out of a Winchester 94 carbine. One chest shot, straight on, tore his heart in half, but he was still fighting the Plott Hounds for about five seconds before he dropped dead (Had he not been in combat, he could have ran a ways before dropping, I think).

I shot a feral hog in South Carolina that was a bit bigger (closer to 300 lbs) with a .30-30 using 170 grain Winchester Power-Points (right behind the shoulder from sideways) and he fell over dead as if struck by lightning. That, too, was from a Winchester 94 carbine. Similar range, or perhaps a bit closer. He, too, was in combat with hounds when he was shot.