Breaking-In Rifle Barrels
Ross Seyfried in the most recent Rifle magazine.
"Let's Kill and bury the barrel-break-in business first. To me, barrel break-in is one of the worst snake oils perpetrated on shooters since the inception of gunpowder. One might make a mild argument for it in a competition rifle. Where sporting rifles are concerned, it is in my opinion, a purely fallacious way for barrel makers and custom gunsmiths to duck off when their rifles/barrels do not shoot for the customer."