I ended up using the Indian Creek without the ports or stripper ring inside. I shot this weekend and at 40 I averaged 150 in the 10 in circle with the fed hw. You can buy the choke from down and dirty. It is made by IC for them to shoot the hw shells. They seem to like the sumtoy here, I haven't used one and a friend of mine used a pure gold. We both shoot the sx3 nwtf model. I am happy with it. Johnny