Originally Posted by steve4102
Curious, why would the 5.56 Nato ammo be more accurate?
Because the chamber specs are just SLIGHTLY different. Meaning, the 5.56 would fit better, lending to better accuracy, as that's what it's meant for.
That's the theory anyway. You just never can tell what any individual gun will do.
And, I'm talking about differences that COULD be as little as .2 MOA. They could be more though.