JSB Exact Diablo Premium Pellets. The exact diablo offers some of the best statistics as a versatile pellet, fantastic for both target shooting and pest control. 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. If you are looking for a compromise between the accuracy of .177 and the momentum transfer of .22.; then Exact .20 will be your best choice.