I patterned both the flight control regular shot and the heavyweights. I couldnt get the heavyweights to pattern very well but the #5 copper plated lead shot patterened very well out of my Xfull and XX (.670)full chokes.25 in the vitals at 40 yards with a very even spread around that (125 in a 10 inch circle) which is good enough for me. The overall pattern is very consistant.