I bought this choke yesterday looking for a tight pattern with lead. It shot low about 6 to 8 inches low with lead at 35 yds. Did not count any, not real impressed with any of the lead. But a different story when I shot a Fed.HW#7. It put 166 in a 10 in. circle. But then I remmembered that it was a 35 yd. shot. When weather gets better I'll try at 40 yds. Its a 21 in. 11-87 rem. The super full rem. goes almost 130 at 40 yds with the fed.hw#7. I really want a lead load that would break 100 at 40 yds with 5s, 6s. Its a .570 dia. cluck