.223 v. 5.56mm
I am not clear on the details of the two designations, nor the rifles so marked.
But....I can tell you that I shot some NATO headstamped 5.56mm (55 gr?) from my MiniMauser, and it clocked 3850 fps plus!!! That was enough of that.
That ammo is now relegated to the AR. Accuracy BTW, was terrible in the bolt rifle.
|