I have a Remmy 870 20 ga. with a 26" pipe. I thought about trying some of the Hevi 3" #7s. I thought you guys might give some idea where to start as far as a choke goes with this combo. I currently have a Sumtoy 562-5, Primos Tightwad .570, and a Carlson's .575. Is there a choke that usually turns better numbers with this shell than what I currently have? I am currently shooting the Fed. HWs 3" #7s, but I am getting tired of trying to always having to hunt them down. Thanks in advance.