JSB Match Exact Heavy Diabolo Pellets 10 34 Gr 177 Ammunition for seriously powerful air guns Have you really got a powerful weapon? Then Exact Heavy is the right choice Heavy Stable Accurate It is being appraised for its low sensitivity for weather and windy conditions Muzzle velocity is 215 m/s if the power of airgun is set to 16J Competition grade pellets Ammunition is tested by 45 meter shooting The required result after five shots is a center to center of up to 12 mm Made in the Czech Republic 177 caliber 10 34 grains Round nose 500 pellets