I have a tru glo choke on my gun. I think I am going to try something else like an undertaker or something. I like the way th federals patterned but I think I could do better with A different shot size. At 20 yards all of the shells were blowing its head off. I don't know why a 10 yard move could make a 6 inch drop in the shot placement. Any help you guys got is very welcome. I just dont know if its me or the choke.