it depends.. if the deer is standing with his side facing me then i put it right in the heart just behind the shoulder... if he is facing a bit angled towards me i aim just ahead of the shoulder which takes out the heart and a lung.. if his backside is towards me on an angle i first try to get him to turn to me but if that doesn' t work and i really really want him then i look at how his belly creases and aim for the part just above the widest part which will take out both lungs but i don' t like to take that shot because it' s much too risky