I just got the Mossberg 835 Grand Slam with the 20" barrel. It came with the new ulti-full "X-Factor" ported turkey choke. So far I've shot Federal 1-7/8oz 4's and 5's, and Win HV #4's. Both of the #4's were best - great at 30, and enough to kill a gobbler at 40 but there were some holes in both patterns at that distance. I just got some of the new federal high velocity shells with the flitecontrol wad. We'll see how those do. The ported choke is smaller than typical aftermarket chokes so hopefully the flitecontrol wad still does its thing. Has anyone else patterned with this new mossberg choke and if so what were your results?