A friend of mine spine shot a doe and humane it wasn't from what I heard from about a hundred yards away. I don't think that he bow hunted much after that. Yes, if you hit them right they don't go far with a heart/lung shot. I remember needing to walk beside the trail on my last one to keep my boots clean. Forget the spine shot, but what about a shoulder blade shot? complete penetration comes into question then I suppose. I went through one shoulder blade once, but I don't think the arrow had much left going out the back side because he broke the arrow and the head was only a few feet away from where he stood. That one did go a hundred yards or so and didn't bleed like a double lung shot. Lower in the body bleeds to the ground faster from what I've seen.
