I think the original Flight control shells recommended not being shot thru ported chokes. It was good advice as the patterns in what I tried sucked really bad. The newer ones apparently can be shot thru any configuration of choke. I tried some turkey shells with the newer Flight control wads with ported and non ported extended chokes and my Binelli SBE3 20 gauge is wearing an extended ported choke shooting TSS pellets. If theyre within fifteen or twenty your margin for error is the width of their neck!!