5.56 NATO 62 gr FMJ Frontier® - Hornady Manufacturing, Inc

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5.56 NATO 55 gr HP Match™ Frontier® - Hornady Manufacturing, Inc

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Which Rifle Round is Better: 7.62 vs. 5.56 NATO

This is why the US military uses 5.56mm ammo instead of 7.62mm

7,62 mm vs 5,56 mm