I have a Henry rimfire. I am on the verge of getting some decent groups, I think, but I know nothing about these. What is a decent group for such a gun. I am shooting from 50 yards and will post a pic. I knew one of these was off but did not call the other. I am not going to put a scope on it as I need iron sights to compete in silhouettes, but I am tempted just to see what it will do. Is 2 MOA possible with this lever gun?