I just received my RPR in 6.5 CM, and installed a Timney in it. I ordered 1000 Starline brass for it, since I've had great results with Starline in my Savage 12 and Ruger SR-556. IMO, just as good as any brass, at a great price. I'll be loading a few next week, and after installing a Vortex Viper, heading out to Pima Pistol to break it in.