I wouldn't buy a used 260 but the rest of em' are okay.....
Carry a rifle for 8-12 hours a day and they should be top on the list for a hunting rifle.
A good shooting Kimber is pretty much the chit.
The most systemic problem Kimber has had with their rifles were with a group of 7mm-08 rifles about 10-12 years ago built with a bunch of bad 7MM barrels that Kimber had bought from a supplier.
I have a friend who bought a "definite bad" used Classic Supreme in 260 Rem that it took about 10 minutes to get it to shoot itty-bitty groups.