50 cal bmg bullet size 267399-Is a 50 bmg a 50 cal
Approximate Cost Per Round cents for steel cased ammo, 40 cents for brass cased ammo 556x45mm NATO The 556x45mm NATO or 556 NATO is a wildly popular round that's the standard choice for the M16, M4, and civilian AR15A great 50 BMG load serious range work!What do you want to see next?Foll 1 Is a 50 bmg a 50 cal