For what its worth . A while back we had a big (250 ++pig) in a trap and I was in a hurry so decided to pop him in the top of the head to clear the trap . All I had was my small .380 but figured from 6 inches in the top of the head it would be fine . Big mistake , had to shoot him 3 times in the top of the head from about 6 inches . I believe in one shot instant kill and this upset me . Big gun or turn um loose !