Several companies provide test targets to attest to the accuracy of a rifle. Wby Vanguard used to do this, Savage will do it and Cooper always does it. I doubt they do much, if any, tuning of a load. I would assume Cooper puts more effort into it than Wby or Savage as I know they do test with hand loads.
How much stock should you put into these targets as a gauge for potential accuracy?
How much stock should you put into these targets as a gauge for potential accuracy?