I seen a few pics in the 20 gauge pattern section where they was shooting the Federal Heavyweight 7's through an SSX choke. I thought you couldn't put the flight control wad through a ported choke? The patterns was good but I always heard you couldn't do it. Also what is your favorite choke for the 20 gauge to shoot the Heavyweight 7's with? Or your favorite load/choke combo for a 20 gauge? Thanks in advance!