First of all, welcome Mikey! I have an 870, I shoot 3" #5's out of a Kick's .665 tube. This setup patterns very well and will put a turkey down in quick order at reasonable ranges. As far as reducing felt recoil with this choke, I believe the reduction is negligible at best. Your shoulder is still going to get walluped with the 3" mags. I don't think the main reason for the ports on turkey chokes is recoil reduction, I believe it is more for starting the wad/shot separation quicker. Someone correct me if I'm wrong on this. Again, welcome on board, this is a great place to spend some time with people who share your interests in the great sport of turkey hunting.