I think it is to much shooting from the bench and not enough real field practicing.
Boy do I know that experience. I didn't even get a shot off when I first started hunting because there was not even a tree branch on which to hold the rifle. What was disgusting was seeing how close the deer was when it disappeared into the woods. It slowly walked from about 25 yards where it got up to about 45 yards across a complete clearing beforing entering the woods. After that I practiced off hand.
