I would state that on your 270 Large Rifle primers are all you may need, not Large Magnum primers like Fed215, CCI250 etc, I might not use People magnum primers for the rifle. Within this area, you can find sources to assist you in comprehension and applying the federal sentencing https://remington-primers-9-1-224568.madmouseblog.com/18629975/helping-the-others-realize-the-advantages-of-federal-primers-215m