The cartridge .308 Win (7.62×51) is used for sporting and hunting shooting through bolt-action and semi-automatic rifles and carbines. The cartridge keeps its qualities under various climatic and weather conditions independent of the season and at a temperature from – 20 to + 50 C. The cartridge complies with CIP requirements. The cartridge is settled upon chambering until the case shoulder rests against the chamber сone. The firearm models H&K SLB-2000, XR-41, Sayga 308, Vepr 308, and Garand 308 are deployed to run the acceptance tests of cartridges. The phosphate polymer coating cartridge case is bottled-shaped with non-projecting flange and made of steel.