I have tried evry choke tube that came with the gun , as well as a patternmaster, and two different SB kicks choke tubes . So far I haven't found an acceptable pattern from any combination??? I have tried 2.75" , 3" and 3.5" buck shot as well . I get consistantly low shot patterns and very very spread out ? Good luck ,,if you find a combo that works let me know.
The best one I have found so far has been the stock IC