RE: bubbles in blood........
What poundage are you shooting, the arrow and broadhead. I'm asking because I shot a buck the other day hitting the shoulder on both side and still passed through. On butchering the buck I found that it cut a v in edge of the shoulder blade ( paddle bone ) going in and went right trough the center of it on exit. The arrow still passed through and stuck in the ground. What I didn't like the deer covered about 450 to 500 yards before going downbut,a blind mancould of followthe blood on the ground. I'm shooting 70 lbs , 400 Axis arrow at 419 gr, and a 100 gr. G5 Montec broadhead. It passed through like I shot a cardboard box.