5.56×45mm NATO - Comparison of 5.56 Mm NATO Versus 7.62 Mm NATO

Comparison of 5.56 Mm NATO Versus 7.62 Mm NATO

Cartridge Model Cartridge size Cartridge weight Bullet weight Velocity Energy
5.56mm NATO M855 5.56×45mm 12.31 g (190 gr) 4.02 g (62 gr) 945.5 m/s (3,100 ft/s) 1,797 J
7.62mm NATO M80 7.62×51mm 25.40 g (392 gr) 9.33 g (147 gr) 838.0 m/s (2,749 ft/s) 3,275 J

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