5.56 Match vs .223 Wylde Chamber

[cory]

Not a Grendel question, but there's so much more knowledge here with only a marginal amount of noise as compared to other forums. So I brought my question here hoping y'all could enlighten me.

What makes the 5.56 match chamber different from a 5.56 chamber?

Is there any advantage to either of these chambers over the other in a magazine fed AR15?

Thanks.