both of which are loaded with a 55-grain FMJ projectile. However, muzzle velocity and downrange energy will vary depending on your bullet selection. Projectile weights range from 35 grains on up to 85 ...
What are the real differences between .223 Remington and 5.56x45mm NATO? Here we dive into the nuances of ballistics, case dimensions, chamber pressure, history, and more.
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