A rebarrel cures about anything that cain't be cured by less invasive procedures.
So, approach the Kimber from the perspective that you want one; you want that light action and damn nice stock and trigger. It'll likely shoot fine. If not, dab bed... crown... at this point you've almost certainly got a shooter.
And if THAT fails, $400-$600 puts a very fine barrel on there. And that's fun too.
Kimbers are worthy build platforms...
So Jeff, you're saying a no.1 contour that goes .560 at the muzzle will work well for a 35 Whelen?
Or are you recommending opening the barrel channel (tearing into the mono-coupe stock construction and rebuilding it) to inlet for a heavier contour?