Headstamp-to-Headstamp

Headstamp-to-Headstamp is our series aimed at helping you grok everything ammo.

556 223 - Comparison

Headstamp-to-Headstamp: .223 vs 5.56

“223 Remington” & “5.56x45mm NATO” designations are often met with indifference — like there’s no real difference between the two. We point out that there is, indeed, meangingful diffrences to be aware of.

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