Hey folks, been a while. I have a mossberg 935 with a 24in barrel. I currently have a xxx-full 670 comp-n-choke in it. My shells are winchester x-tended range 3.5 6's. The problem that i am having is that out to forty yards the pattern is great, but after 40 yards the pattern dramatically falls apart . It seems like it drops of the face of the earth. I have owned many 835's in the past and have mixed the constriction with many different chokes. Thus the reason i put a .670 comp-n-choke on the 935. Different gun but the same barrel so i figured it would work well together since it did with the 835. i was thinking that maybe the .670 was a bit tight for the gun, but i'm shooting 6's? Wanted to try a indian creek black diamond series in .675 in hopes of a major improvement from 40 + yards. Any info or help would be helpful. Thanks Lou-Lou