I have found Starline brass to be good stuff, used it in many calibers .454, to .45-90. And 100% in my 6.5 Creedmoor 100% in the 6mm ARC, ARs as resized 6.5 Grindel and their 6.5 Basic cases sized to 6 mm ARC 1250 pcs. Works great, shoots small groups. One area I haven't used it is 308 win cause I have tons of Lapua both regular and Palma brass, a bunch of Lake City, and Winchester brass, but I would use Starline their too.