What the difrance in the Sherman and the prc if you want to talk about the newest thing. The Sherman will always be for guys like me that like to hand load.

But if you don't that's Kool. And I bring it up mostly because the prc is normally built on a long action but can be built on a short action. Much like the 6.5x284. but with the problem presented about what mag to use the Sherman is easy. Any mag that will feed a 270/280/30/06/35 whelen will fed the Sherman reliably.