I'm about 99% positive it had to have happened on entry, not when he fell. The tip and broken ferrule were between the hide and the ribs, not in the wound, plus the broken arrow was plugging the hole. I was directly behind him when he shot and his arrow flew perfectly. I truly hope it was a flaw and like you said I think that this BH is great for deer sized game but no bigger. I'm pretty sure my buddy is convinced also.....he was sweating bullets when he saw the penetration on his arrow.

"What we do in this life echos an eternity"