[TimH]

I know arguement that these 2 rounds are the same. Going from these specs

http://www.ammo-oracle.com/#diff

the rounds a different. So lets say you have an AR15 chambered for 5.56. Would it be less apt to jam if you only shot .223 ammo through it? Just curious....Tim

[Third_Rail]

The rounds are just different loads, really... commercial .223rem ammunition is loaded lighter than NATO spec 5.56mm, that's all.

[CleverNickname]

Everything I've read says that it's ok to shoot .223 in a 5.56 chamber, but not the reverse.

Third_Rail, did you even look at the link? There are slight dimensional differences between the two rounds, even though they're pretty close.

[Third_Rail]

Yes, I did look at the link, but I have PERSONALLY fired NATO 5.56mm ammunition out of .223rem chambered rifles, both magazine fed and single shot. I've never had a problem with it, but then again I never fired a NATO 5.56mm round out of a tight tolerance "match grade" .223rem rifle.

[TimH]

This question wasn't ment as a .223 vs 5.56 debate. Just curious if you thought that .223 would be less prone to jamming in a 5.56 chambered rifle? Thanks Tim

[Third_Rail]

Sorry about that, I really did get off topic. My apologies.

[TimH]

No problem, Just didn't want stray from my original question

[George Hill]

I don't think so.

[artherd]

TimH- I doubt it, but if you want to give me a pair of M4s to test, I'd be happy to oblige :)