RWS Meisterkugeln ("Master Target") pellets have been part of every ambitious air gun shooter's equipment. Significant improvements in airgun ammo production technology have led to yet another enhancement in quality. New material compositions and optimized surface treatment have created a permanently bright and shiny appearance. The production of accurate dimension and weight of each RWS pellet is subject to continuous checks. .177 caliber, 0.53 grams, 8.2 grain.