Oh Yeah I should have said what a Patternmaster is. A Patternmaster is a choke tube that works with all sizes of shot but better with larger sizes. A Patternmaster has little teeth that grabs the wad for a split second letting the shot get ahead so the wad doesn' t go through the pattern messing it up. You have better patterns and shorter shot strings(length from lead pellet to back pellet) It works with seel, lead and everything else. They cost 79.99 but if it gets more birds with less shots it will pay for itself later on. Thats why I have one and highly recommend it. Hope that helps everyone that is confused.