These RWS R 10 Match pellets are .177 Caliber (4.5 mm) and weigh 8.2 grains or .53 g, There's 500 of these, German made, precision airgun pellets in a tin. They're carefully crafted for a balanced-weight in the wadcutter shape designed for consistent accuracy in the X ring. RWS air gun pellets are characterized by their particularly skillful material composition, the special surface finish, and optimized weight. These things guarantee outstanding precision values. All RWS Match pellets are produced in the classic diabolo shape. Head design, tail section, and the special form of the pellet's head plate are decisive factors for the optimum stabilization of the pellet in the air rifle's barrel and therefore also for sharply punched holes. Tight production tolerances combined with strict testing conditions lead to further optimization of accuracy. Whether shooting at a range or shooting for Gold in the Olympics, RWS makes the pellets that deliver. R 10 Match Pellets are constantly monitored for quality during the entire production phase to give the shooter the ultimate in accuracy and performance. RWS Premium R10 Match Pellets are optoelectronically inspected for absolute consistency in size and are made with exceptional material quality that delivers a spotless surface finish that is protected from oxidation for long term storage.