Patternmaster Black Cloud MODIFIED Choke is a constriction choke that is compatible with the Black Cloud Ammunition or any ammunition with a "Flight Control" wad. It has also proven to shoot well with other brands of shotgun ammunition as well. Patternmaster worked closely with Federal Premium® Ammunition company to design a tube that enhances their “flite control” wad inside Black Cloud and Prairie Storm ammunition. Expect modified patterns with an effective range from 20 to 50 yards.
Note: Testing done by Ballistics Performance has determined that ammunition with velocity of 1550fps and below will achieve the best results with Patternmaster Tubes. Ammunition containing flight control wads may not perform using a shotgun with a ported barrel.
Not for use with slug ammunition.