The proof is in the pudding so to speak with Noveske barrels. That is how John built his business. I thought it was hogwash until I actually shot head-to-head against other AR barrels that I own(i.e. Spike's, PSA CHF, Stag, Colt, BCM). YMMV
My mileage doesn't vary, I'm pleased as could be with the accuracy I've seen from the Noveske Afghan I installed earlier this week.