What’s the Difference Between 5.56 and .223? Are They Interchangeable? Does it Matter?
Most AR-15 rifles are chambered in 5.56 or .223. What’s the difference between the two rounds, anyhow? They’re supposed to be interchangeable…kinda, sorta, maybe…aren’t they? The difference is in the round itself: the NATO round is a little bit hotter. The case is the same size, but the powder charge, projectile and also the rifle … Read more
