i think that although button-rifled barrels oftentimes start out being accurate, they do not maintain their accuracy as long as hammer-forged barrels. the metal doesn't handle the pressure and temperatures of high-intensity cartridges. they also can be relatively rough compared to hammer-forged units. that's why some people complain about their being "foul-o-matics" and so on, picking up a lot of metal fouling.
i honestly think that for the price of a Kimber a cut-rifled barrel could be part of the package. it would be closer to the standards of a competition barrel such as Krieger sells to the match competitors. why? because remington's price for a hammer-forged unit, with its well-documented, well-known accuracy is cheaper by $250 to $350 dollars. the difference in the cut-rifled unit, if one was provided by Kimber, could be included in the rifle's already-high price tag.
model Seven's are somewhat pricey, too. i've held a Model 700 SPS in stainless steel and it's relatively light. the Kimber's lightweight approach to building their rifle gives us a thin barrel in the Montana edition, and a thinned-out stock. AND, the guarantee of accuracy with a much-less-expensive Weatherby Vanguard tells me that Kimber is not really interested in giving us much for the money.
a cut-down 20" barrel on an SPS in Stainless Steel would probably be a lot stiffer than the 22" barrel on the Kimber. i'd expect it to outshoot the Kimber for accuracy. AND, the Remington trigger is adjustable. i've seen great pull-weights from Model 700 ADL's , etc. with trigger work done at home, sometimes using Wolff Gunspring replacements, sometimes just adjusting the factory Remington spring.
my sincere opinions,
ss'