Got a buddy of mine that has a Armalite AR10, and while firing it the other day, i happened to notice dents the whole way around on the shoulder of every round fired. I first started to think it was the case OAL but everything checked ok. Could this be a factory headspace issue or just a manufacturing error with the chamber area itself?
Just a thought here on this. Without actually looking at the rifle itself... but do you think in could have anything to do with the ejection of the rifle?
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