Light weight, skinny barrels can shoot bullets as accurate as heavy weight, thick ones. Weight and profile have nothing to do with accuracy. But those things do help one hold the rifle more steady.
In my observations of super accurate rifles doing their thing, the common element is their bore and groove diameters. They're very uniform and the groove diameter's smaller than bullet diameter. Most commercial factory and aftermarket barrels are not.
Skinny and lightweight M1 and M14 barrels of good, match grade quality, will shoot handloads and commercial match ammo inside 4 inches at 600 yards. How many commercial or aftermarket barrels of any weight will do that?
In my observations of super accurate rifles doing their thing, the common element is their bore and groove diameters. They're very uniform and the groove diameter's smaller than bullet diameter. Most commercial factory and aftermarket barrels are not.
Skinny and lightweight M1 and M14 barrels of good, match grade quality, will shoot handloads and commercial match ammo inside 4 inches at 600 yards. How many commercial or aftermarket barrels of any weight will do that?