My bet is just below the spine. I lost a nice 8 point that way on a NY hunt. Dropped him like a stone at 125 yds and I could see him crawling through the goldenrods while I emptied my slug gun trying to anchor him. (all I could see was his head and antlers through the weeds.)After he went out of sight I climbed down from the tree stand and went over there and could see the marks where he belly crawled through the snow. I let him rest since it was now getting dark and took up the search the next day. I could see in his bed where I shot him (high on the back) and he stopped bleeding and wandered off to live another day.