Indian Creek Choke Tubes are computer machined tubes that accept all lead and steel, and hybrid heavy loads 2 3/4" to 3 1/2" shells. This patented choke tube accommodates #2 through #8 shot sizes. The 30 parallel ports on the ported version quickly vent gases and stop wad rotation. This is proven after the shot where you will find 30 grooves cut in the spent wad. Also greatly reducing felt recoil. This tube increases pattern density's up to 35-40% in most guns. The Black Diamond Triumph increases pattern density, is easily hand tightened and has precise CNC Construction.