I would also check the draw weight of the bow. I think with all the "need for speed" and power one of the mistakes new bowhunters make is to try and pull and hold a bow that is too much for them.

Doesn't take much to go through a deer if you got sharp broadheads. I got a good friend who is just starting to bowhunt. Had his bow set on 83 pounds and couldn't group at all. We have been turning the draw weight down and his groups have been slowly shrinking. His draw weight is now 70 and I think it is still too high for him, but waiting for him to come to that decision for himself.