Mark Sam:  I don't know how much you know about guns and proper dis-assembly & re-assembly.  Do you know how to remove the Bolt from a Krag?  Do you have proper fitting gunsmithing screwdrivers?  From your photos it appears there may be some cracks or splits in the wrist area of your Krag's gun stock (handle with caution).  Arm yourself with knowledge before you bugger everything up.  If you can remove the bolt, clean the barrel from the breech with a one piece stainless steel cleaning rod of adequate length.  Cleaning rod tip should be brass and for .30 cal.  Use .30 cal. bronze brushes and Hoppe's #9 solvent and flannel patches.  If you can take your rifle apart, do so and separate metal parts from wood.  I would clean the Metal parts of surface rust and hardened grease, paint and grime (lightly) by hand with #000 steel wool saturated with Hoppe's.  I would wipe paint spots on wood with old cotton 'T' shirt rags damped with Turpentine or Mineral Spirits (starting with a small trial area in the barrel channel).  I would wipe down larger areas of the stock with a 50/50 mix of Linseed Oil & Turpentine.  I'd finish up by hand rubbing the stock with Linseed Oil.  I might also try Pledge spay furniture polish.  I would use nothing more abrasive on wood than cotton rags or my thumbnail.