Building on our ultimate performance Quad Seal design, the Bio-Wad Gen II is a new full cup wad utilising the same 100% environmentally safe, cutting-edge material. Manufactured in-house by Gamebore, the Bio-Wad takes all the benefits of the Quad Seal technology with its incredible gas seal allowing Gamebores exclusively blended powders to burn cleanly for maximum pressure, and incorporates a new and unique cup section for steel shot. The Dark Storm Precision Steel with Bio-Wad cartridges have a high-tech design featuring four petals with unique 45 degree overlapping edges for complete barrel protection on pellet setback, plus ribbing for reduced surface friction and extra overall barrel protection.