Once fired factory 6.5-300 brass which has been fully processed including ultrasonic cleaning, AMP annealed, polished, trim and chamfered in Giraud case trimmer, sized in FL forrester die, and neck tension set at 2 thousands using 21 st Century Mandrels. Primed with GM215M primers and ready to load. Blue cases do not come with the brass. I was going to reload these after I broke the rifle in and decided to use Peterson brass for my load development.