I had been using a modified choke in my 20ga. and Remington Express Long Range 2 3/4 1oz. #6 shot . We have been hunting some really thick cover so last weekend I put in my IC choke . Wouldn't you know it , I got a long shot at a rabbit ( about 45 to 50 yards away ) he was standing still and had lost the dogs for a minute , so I took the shot . He went right down dead without any kicking , but I only put a few pellets in him , one was through the heart . I am going to use the same choke tomorrow . I hope the rain holds off , we got soaked last Saturday .
If you think you are going to get some long shots like I had , I would use the IC and full combination and I would just stick to the #6 shot .