I have killed lots of hogs most with a ml, some with spear and a 270 cal. When hunting with a spear be sure you got good dogs that would not let go. When i gun hunt for hogs the only shot i take is in the arm pit, right behind the front leg. With bow or spear you got to hit the neck bone or the heart, the heart is right behind the front leg in the armpit. I took a few guys hunting one night with my dogs the only weapon was a knife and spear. When my dogs got one caught i would get close enough to cut its throat or spear it in the heart. But i am not able to hunt this way any more thanks to a judge that though that using catch dogs was too cruel. This was after one of the guys taped the hunt when the dogs were holding the hog and i stabed it in the heart with a knife.