The ballistics experts here (and there are many) will be able to add detail, but I'll weigh in with a few general observations: 1) Different loads and components will deliver a variety of results from any given barrel. 2) Modern ammo delivers tighter patterns than shells available generations ago. 3) The differences between an IC/IM setup and C/F chokes are not as significant as several other factors that can affect shooting success. 4) An "open" and "tight" combination is considered ideal by many shotgunners of both the upland and waterfowling persuasions. 5) If you haven't already done so, have the bores professionally measured, as opinions vary and the word "full," especially, can cover a lot of ground; also, pattern the gun to see how those chokes actually perform before you consider opening the second barrel. Bottom line -- if everything else about the gun is right and what you've been looking for, I wouldn't worry too much about choke. Good hunting. TT
