Re: Who's stretching it out with a 270 WSM?
Couldn't really say. I do my load work in the Spring/Summer and shoot all year long. Haven't really noticed too much difference with RL22 or Magpro, in my case. I do notice that RL22 will climb in speed if shot quickly, due to chamber temps, but if allowed to cool, RL22 has been excellent as has Magpro.