JSB Exact Jumbo Heavy Diablo .22 airgun pellets ideal for general hunting and target use. Cabre: .22 (5.5mm) Quantity Supped: 500 Weight: 18.13 Grains Manufacturer Description: Characteristics: Do you need a really heavy ammunition for you very powerful weapon? Do you want something accurate and well-balanced? To hit the target even in a bad weather conditions? The answer is the Exact Jumbo Heavy. Muzzle velocity is 165 m/s if the power of airgun is set to 16J.