Most refinishing techniques seldom enhance or look right on classic sporting and military firearms.  Modern Bluing simply does not match any of the varied finishes that appeared on an original Krag (i.e. rust browning/bluing of the barrel, flame bluing found on extractor, safety, and cutoff, and case-colors found on action).  "Patina" is not new or trendy to gun collectors.  Preserving what is left of the original finish has been the tradition for centuries of collectors.  Polishing and buffing metal parts destroys the shape of parts with dips, ripples, and rounded edges.  There are patient top-notch restorers but their work is extremely expensive and seldom utilized on military pieces produced in large numbers.  In fact, the price of a restored Krag would probably exceed the value of an original in very good or fine condition (and it would be 'refinished').  As Madfarmers recently pointed out, Antique Guns are treated much like collectible coins;  you don't buff and polish them.  We all probably enjoy a beautifully restored vintage car.  But, some are poorly done.  Sometimes you see a car that is all original, cared for and not restored or rebuilt.  It would seem 'criminal' to destroy that car's originality by making it look new.  It is a rare and beautiful thing!