It's been 24 years since I've killed pigs so I'll have to ask my dad if my memory is correct. A pig is actually kind of hard to kill instantly with 1 shot unless you hit it exact. I believe I had to draw an imaginary X between the top tip of the ears to the opposite sides outer corner of it's eye and then hit the crossing lines of the X. Basically a bit higher then right between it's eyes. Steers or cows were even harder to kill with 1 shot. We had to sometimes shoot them 2 or 3 times, but most of the time once would do it. I can see why it would take many shots to kill that huge hog!