I shot my late father-in-laws BPS yesterday for the fist time with a SumToy choke. With Hevi 13 #7 at 40 yards I got 289 hits in the best 10" circle. The center of that circle was 5-6" above the point of aim. I am planning on dropping that down so the center of the pattern is 1-2" above the point of aim. I figure if I aim where the feathers meet the neck would be my aim point and the neck/head would get 100% of the pattern. LongBeards #6 produced 229 hits at the same distance but the pattern was not as nice and even as the Hevi Shot.