I appreciate the views of all who have posted. With full acknowledgement for jOe's dire warnings (which I do take seriously), I've been shooting this old Scott for a number of years like it is, and I think I will try the vinegar and wine cork treatment, then clean the bores up with steel wool or emery cloth or scotch-brite or something like that and see if things look any better. I can't do any damage that way that can't be remedied with a backboring and professional polish. Thanks again for your advice...Geo