ORIGINAL: maineac
Any one try the "Tubb final finish bullets"? From the looks in the catalog the bullets have different grits (for lack of a better term) to sooth out any impregections fromteh rifling process.
Snake oil.
Benchrest shooters tend to be the biggest fans of breaking in a barrel. To be honest, I have tried everything from 1x5, 3x5, 5x3... to 1x15, 3x5, 1x3.... and even nothing at all.... I have never noticed accuracy get better in a rifle until I find a load that it likes.... that takes some time and some shooting. But in my experience, anything less than 100 rounds isn't going to do much unless you shoot it with a super hot barrel. I don't fool with breaking in barrels anymore. Ammunition is too expensive, my time is worth more than that to me, and I don't think it does anything except give you an excuse to shoot.