The CNC receivers have the RR serial number. The ones that I've had in the lathe are very straight. A lot of them had the bolt handle mistimed and hard extraction. I've had to send the bolts to Dans40X to be located correctly, timed, and tig welded. I'm starting a 308 with an Obermeyer 11.25 twist barrel. Believe it or not, this is my first 308.
