I've patterned both Federal Flite Control 00 buck and the Hornady Critical Defense 00 buck with their Versatite wad. Both wads look identical to me. With the Federal load I can keep all pellets in the upper A-B zone of a USPSA target at 25 yards out of my 590A1. The Hornady pattern opens far faster out of the same gun. I hypothesize that the Hornady load since it is a full house load running 1600 FPS vs. the Federal at 1145 is shedding the wad sooner because the "wings" on the wad will get fully opened up quicker with the increased velocity. Even though the Hornady opens up faster than the Federal by a lot, they are still better than conventional loads at 25 yards and in.