10-26-2021, 12:12 PM
Other things to consider. Try the scope from your AR10 to rule out any issues with your existing scope / mount. Is there anything within the handguard that could be contacting the gas block or barrel during the shot? Does the barrel crown look appropriate...sufficient size, angle and concentric to the bore? It wouldn't hurt rebuilding the upper and taking those small steps of truing the receiver face, bedding the barrel, using a moly grease or appropriate anti-sieze on the extension threads and properly torquing the barrel nut. These are all things that you can do with no or little investment.