I was in a ground blind, so I pretty much had a straight, level shot, broad side. It was dusk, and looking through that peep site I didn't get the greatest view. And the fact of there being no blood anywhere, I'm thinking you all are right with you first thought, that I hit the very top of its back. I'm 95% sure the shot was not low. Thank you all for your input. I think it will be ok. I will have to set my camera back up over there and see if they all come back. After that, I'm thinking they wont be back for a while.?