If you hit in the right spot you can hit both lungs and the aorta the biggest artery coming out of the heart this is the best shot. Being a bow hunter a shot to the head is irresponsible and just stupid unless you got a high poundage hard shooting bow you will just wound the deer. a guy that hunts with a buddy of mine took a shot that hit a twig and diflected into the head after trailing the deer for about 200 yards with little blood he found it still alive wandering around blind it was hit in the eye and some how went blind in the other luckly he was able to put another arrow into the lungs and put it out of its suffering.