Ok. I have to take back everything I ever said about Kimber's Montana. I gave in and ordered one in 308. Took possession yesterday, checked the Campfire list of 'tweaks' and loaded some rounds last evening. This is from today's range session. Nothing done to the rifle but checked the mag box to make sure it would wiggle (it did), adjusted the trigger to 2.5 lbs, and made sure the front action screw did not bottom out (it didn't). So here are the results with it fresh out of the box, with VX2 2-7 mounted in Talleys.
150 TTSX over 45 gr H4895: 5 shots into 1.1"
150 NAB over 46.5 gr Varget: 5 shots into .7"