Can tell you what a 4 year old wild alabama buck roaming around places he really don't want to be will do when you say "meah" he will hall arse. The one I did miss was an above average large 7 point with large mass can't say I would have got him for sure, but I would love to have that shot over! If a deer is on the move you better just shoot the sweet spot double lung 1/4 back from front to back as close as possible. Standing in acorns or over a corn pile at stand still I would still go for double lung sap if I felt like they were not aware of your presence for the average bow hunter. Heart shots if they don't jump are to risky for me anyhow.