JSB Exact Heavy Diablo Premium Pellets. This pellet is designed for seriously powerful air guns. Its weight makes it extremely stable and accurate, this means it has a low sensitivity to weather and windy conditions meaning you can always have the confidence to shoot accurately. Muzzle velocity is 215 m/s if the power of airgun is set to 16J. JSB quality is without question the best in the world, every single pellet is hand-sorted and individually checked to ensure they are all created equal. This gives you great consistency allowing you to get the best out of your airgun with this pellet being designed to suit nearly all airguns.