Remington "Power Piston" One Piece wads are available for a variety of loads. The exclusive plastic shot container cushions the shot during firing. The specially designed shock absorber section reduces initial shock and minimizes shot-to-shot deformation. The base acts as a seal to help prevent gas from pushing past the shot column. The one-piece plastic wad protects the shot from the inside of the barrel. It all adds up to rounder shot, truer flight, and improved patterns without barrel leading.