I hit one 3 years ago in the same spot. There was a loud "crack" sound when the arrow hit and the deer ran off with most of the arrow hanging out. I recovered the arrow a little ways down the trail. It had penetrated about 6 inches and a blade was broken off. There was a decent blood trail for 250 yards before it petered out. I saw the deer weeks later and there was a knot where I hit it.