I have been shooting PRS for a few years.......................... As to the difference between the 6,5CM and 6.5x47, performance wise, either will get the job done well. If you don't reload, the 6.5CM is an obvious choice. I have switched to the 6.5x47 for a few reasons. It's very easy to load using H4350 or Varget, and achieves exceptional accuracy with a variety of bullets, at low ES. IMO, the case design is superb, with 100 cases easily lasting the life of the barrel. The shorter case feeds perfectly, and easily accomodates the longer bullets without magazine length issues.
Shown: My 6.5x47 PRS rifle. It's a pretty consistent .25MOA shooter...better, if I'm on my game. Groups at 400 rounds(3 shot), and 1800 rounds(5 shot). My Criterion barreled Egg Shooter is equally accurate with the same load.
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