.22 cal Round nose & pointed 4 pellet types 240ct 60 JSB Match Diabolo Exact Jumbo Heavy, 5.52mm head, 18.1 grains 60 JSB Match Diabolo Exact Jumbo Monster, 5.52mm head, 25.4 grains 60 JSB Match Diabolo Exact Jumbo RS, 5.52mm head, 13.4 grains 60 JSB Match Diabolo Straton Jumbo, 5.50mm head, 15.9 grains Do you hunt? Want precision? JSB Match Diabolo pellets have a reputation of being uniform in size and weight, which is why they have a reputation for superior accuracy in air rifles and air pistols. This .22-caliber combo pellet tin is a good way to test great pellets to find the right ones for your air guns.