Full load short crimp 308 (7.62x51) blanks for rifles and machine guns. Hotter than U.S.G.I. M82
Main use has been in M1917s and 1919s though good for all properly short blank modified belt fed machine guns and semi-auto "machine guns" providing huge sound and flash.
Will work in 7.62 cloth belts when properly loaded.
.187 - .195 BFA recommended.