These are probably the cleanest most perfectly made pellets on the market. Weight consistency is very good and skirts are perfect. A pellet you can shoot straight out the tin. Unfortunately however their bc is not as high as a jsb in my rifle. I calculated a bc of .021 at 12ftlb velocities. They also seem to be more affected by wind than the jsb 8.44gr in my tests. This goes for both the 8.48 and 9.56gr versions.