The specially-designed, longer choke tubes of the Crio® System allows for more gradual constriction of the shot charge, which reduces pellet deformation. Frozen to -300° F, Crio® Chokes have a more evenly grained and slicker surface that provides less resistance to the shot charge as it passes down the bore. When coupled with a Crio® Barrel, the result is as much as 13.2% more pellets on target.