I've had a 223WSSM, a 243 WSM, 270WSM, 300WSM, 6 CM,several 6.5 CM and a 6.5PRC. HAD! None did anything that much better than the old tried and true that's been around for years. My new to me 6.5-284 does about the same as the PRC so why do I need the PRC? I'm old and been around the block several times. The old cartridges have stuck around all these years for a reason.
