The Flite Control (FC) wad has 4 small pockets at the base of the wad that open when the wad clears the barrel. These pockets act like air brakes and slow the wad and allow the shot string to carry on. In this way, the shot string stays together much longer than a normal shell. Erratic performance is caused by two things: Wad stoppers or ports, and too-tight of a choke. I called Federal and spoke with one of their techs to inquire about the constriction they would recommend. He said anything from modified to X-full, and he thought X-full may cause problems. Wad stoppers and ports rip those little pockets at the base of the wad, and when the wad clears the barrel, unless all for pockets were torn identically, the wad begins to yaw, and releases the shot-string at an angle, causing blown patterns.
Shoot a factory full or X-full choke (no ports or wad-stoppers), and I think you�ll be amazed at the patterns you get.
