In my experience, Krag barrels index well from rifle to rifle.  In other words, swapping barrels is quite easy.
For the cost of the new barrel and CMP doing the work (about $350), you could get a nice sporter barrel and the tools to do the exchange yourself.

I documented this over at the Milsurps forum.  Mods, if this is out of line, please remove the link:   (You need to Login