Wow! I just shot an 8 pt last night and that is basically the same spot I hit him but the good thing is he was quartering away, therefore the arrow went up in and got the liver and 1 lung. We backed out with little blood the same as you, and recovered him this morning not much further but what happened was the arrow didnt go through too, and it clogged the hole giving little blood. But wasyour buckquartering away?..quartering to you?...broadside??? That might play a key role if you hit a lung.