Years ago I was assisting a guide with some other hunters, and the guide bugled in a very large 6 x 6 elk bull. The hunter shot it with a .30-06 loaded with some very hot handloads a friend had made for him - all I know is that there was about a 2 foot fireball out of the end of the barrel when he shot. The elk was only about 60 yards away, and went down like a rock. But then a few seconds later, he got back up, and the hunter proceeded to empty his rifle at the elk, as it slowly walked off into the woods. We expected it to drop at any point, but it just kept going. When we went up to where the elk had been standing when shot, there was absolutely no blood, but we did find a piece of antler. So apparently the hunter hit the elk in one of his antlers with his fist shot, which stunned and dropped the elk, but it quickly recovered, and he apparently never hit it with any of his follow-up shots. But I have heard that moose are easier to kill than elk, so who knows?