RE: Shooting low pattern
There are several things you could do. One option would be a red dot scope or a scope. Another would be the fiber optic sights. Or you may just want to find what sight picture is most comfortable and then change your point of aim to the head instead of where the neck and feathers meet. If you are shooting low and are aiming at the head already, I would suggest the adjustable fiber optic sights or a red dot.