I would try a choke in the .650 to .660 size and try some #5 and #6 shot in both Winchester and Federal shells. The best combo can only be found out by trying them out. One of these may work for you or it may be none of the above. There aremany options out on the market, you could ask 100 differnent people and get atleast 100 differnent answers. I wish you good luck on finding the best for your gun.