My original want was to be able to have a good bit of energy at 1k which obviously isn't going to happen with a 25SAUM in a 20" barrel. My mindset changed when I started thinking about a coyote/antelope build and my need for hunting energy at 1k was abandoned. I'm still in the mindset of a lightweight, short, suppressed coyote/antelope build. The 6.5PRC and 270WSM are both overkill for that type of duty which is why I'm stuck on a quarter bore or something in the 6mm family. Being that I have the XM action with mag bolt face I'm probably barking up the wrong tree with a small bore cartridge but it's what I'd like to do.