Australian Munitions Sterling 7.62X39 123gr Full Metal Jacket 20. 62X39 123gr Full Metal Jacket 20 P - Sterling 7.62x39 Steel Case FMJ rifle cartridges are ideal for shooters seeing performance and value. These cartridges utilize FMJ projectiles lacquered steel cases and Berdan primers. Specifications for Australian Munitions 8698779971205 Sterling 7.62X39 123gr Full Metal Jacket 20 P: Manufacturer: Australian Munitions Caliber: 7.62x39mm Number of Rounds: 20 Bullet Type: Full Metal Jacket (FMJ) Bullet Weight: 123 grain Cartridge Case Material: Steel Application: Range Case Material: Steel Australian Munitions 8698779971205 Sterling 7.62X39 123gr Full Metal Jacket 20 P What is Australian Munitions 8698779971205 Sterling 7.62X39 123gr Full Metal Jacket 20 P good for? The manufacturer suggests that it is good for range.