RE: kimber montana
Theoretically a blind magazine is not only lighter but it makes the action that much stronger (less torque shifting when firing) which supposedly yields better accuracy. All that is increased when you add it too a non moisture absorbing stock as featured on the Montana.
That bein said, I guess because I grew up on an ol 30/06 ADL I dont mind the blind magazines. I absolutely LOVE the Montana. I burned one up with Kimbers guys lastyear in WY (308) and will no doubt add a 270WSM Montana too the safe before long. The guns are VERY light, and the kevlar/carbon fibre stock is something worth paying for. The gun should outlast as many barrels as you dare shoot out!
Good luck,
RA