Thank you, Frank-appreciate the quick reply. If I could indulge you a bit further, do you have a preference for a barrel diameter profile that consistently produces best harmonic behavior in 6.5 Creedmoor barrels for AR10's? Was thinking .950 and fluted under guard, .875 at GB and .860 to 22", but have not finalized spec with my smith yet. Wanting max accuracy and thermal stability, less concern for weight, though my current Criterion at .920 is a heavy piece, but quite accurate.