I too am leary of using the Tubb system on a new barrel. But I did try it on an old barrel that was in obvious distress and which copper-fouled horribly when shot. The Tubb system DID improve that rifles accuracy and eliminated MOST of the fouling problem. It breathed new life into that gun.

If you have an old beater that needs help, try the Tubb system - it will probably help....................but unless you have some disposable cash for new barrels on-hand, I wouldn't recommend it for a new rifle.