I have never seen anyone on here mention these chokes. I heard about them from a friend and now I won't shoot anything but strangler. I leave it in all year in both my 12 gauges. I've put everything from buckshot to steel duck loads to hevi shot turkey loads through them and they have always performed perfectly. I use them for ducks, turkey, dove, squirrel, deer, whatever. check em out at
www.stranglerchoke.com