I have two chokes for mine the Jelly Head and Indian Creek. Out of mine, I got great patterns with an Indian Creek 665 and 3 inch mag blends, 3 inch hevi 7s. But I prefer to shoot Nitros. I think that the 650 would be too tight and blow your patterns, just my opinion. Pure Gold is another awesome choke company check them out too.
Good Luck and God Bless
Ray