Man I hate to be that guy but I going to say he didn’t hit exactly where you thought. Not criticizing because it happens. But in the moment you don’t notice the little things. As far as the deer being dead with any other rifle. I doubt it. Deer with blown up vitals die quick. I went down the magnum road and have come back full circle. Puncture vitals deer dies. Don’t puncture vitals it’s a totally different game.