Guys, I hate to say it...but in my opinionm your wasting your time. I have basically tried them all. Without a doubt the best choke/pattern combo pattern is the Rhino choke and Nitro ammunition Hevi shot load (NOT Remington Nitro) combination. I know of at least 5 people, (including myself) who use this combination with incredible results. I get over 240 pellets inside a 10" circle t 40 yards which is comparable to the others......it is an awesome set up