6.5prc,6.5saum,7saum, 300wsm if want to open up your bolt face or have a different bolt fitted. You might as well experience the benefits and drawbacks of something bigger. You’ll want a muzzle brake or two. Radial(less effective) and/or a rear angle port type( louder, nasty blast at your shootin buddies). Keep the one you like. Not hard to sell off with a common thread.
Let us know how your choice works out.
I figured to benefit from the 6.5 saum/prc you need a long action, or at least a short with a wyatts extended box mag. The 7 and 30’s seem to need medium at least to be fully functional. I’d have no problem getting another bolt to do a 7 saum, 6.5 saum or something but want to be running in a mag