As for head shots, I have seen what happens when you are off by just INCHES and blow break their jaws. The starve. Plain and simple. NEck is as someone said 50/50 chance of hitting anything vital. If you wanna drop the with a gun, hit them in the shoulders, if you can't stand wasting any meat, go for the lungs. But don't shoot at the head, I don't care how good you are, they can always move as you squeeze the trigger.

I still say go for the vitals, they are called that for a reason.

"We do not inherit our wildlife from our fathers, we only borrow it from our children."