Time for a nice 6. I'm considering the two calibers mentioned. Rifle components will include Darrel Holland stock (like the McMillan BDL), Surgeon RSR, and a Brux #5. That's the size and shape. Sort of packable size hunting / varminting / plinking rig. Might shoot f class or other informal long range comps too. Mostly I play around hunting or "field practising" at long range. 600 yards plus, mostly plus. I plan to run a 105 - 115 type bullet. I'm just looking for some conversation about any advantages one has over the other, real or imagined. Barrel life, terminal performance, versatility, ease of loading.... whatever. Thanks for the input.