Here's one from Remington, the specification for the .308 150-grain Core-Lokt:
ACCURACY ............................. Maximum average extreme spread of three 5-round groups of 1.5” [38.1 mm] at 100 yards [91.4 m] fired from a SAAMI-compliant accuracy test barrel (1:12 twist, 24” [609.6 mm] in length) mounted in a Universal Receiver.