Take that barrel to someone with a true 5.56 finishing reamer and have them ream the camber, if it cuts some metal then it wasn't really 5.56 to begin with. Randall Rausch at AR15 barrells isknown to do this. I bet ADCO would do it as well. Maybe someone withsuch a reamer will volunteer to let you send it to them, free less shipping charges?


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