I have an older one, and I get pretty even patterns with a cheap Undertaker .660 (lead only, non-ported) tube and Win XX 3-2-6's and Win X 3-1 7/8-6's. I haven't experimented much with other rounds and chokes with it, because it's my second backup gun. I could probably get denser patterns if I choked her down more, but I would hunt with her any day as is, though. You might want to contact SumToy and pick his brain.