I'm planning on building a lighter-weight 22" barreled hunting rifle using either a .257 Bob or 6.5x55 for furbearers to whitetails.

Using lightweight sporter barrels, is there much real world difference in accuracy between the more expensive aftermarket barrels and factory? For example Shilen, CBI etc. vs ER Shaw or Savage factory.

Inquiring minds and pocketbooks are curious
Thanks
Jeff