I was wondering if the general rule of thumb with a short barrell gun is to have a tighter restriction for the choke tube. I have tried a Jellyhead 665 and 660 and both are a little too open for what I am used to. Was wondering if a .655 Kicks would be any better or too much. Both of these chokes were too open using various Hevi shots, mag blends and Nitros. However, I can put either one of these chokes on my 28" 870 and they are great. So I am figuring it has to be the barrell length.