Beretta extreme A400 owners

[Turkeyslayer 101]

What kind of choke and shells are you getting the best patterns out of? I shot mine today with a rhino 660 choke, hevi # 6s shot well 220 in 10", but not so well with the hevi mix blend, my next test will be the nitros this week, I also have a new benelli super vinchi with a 660 nitro choke haven't shot it yet!