To my knowledge, none of the products used for cleaning purposes will remove park from a gun. About the only way I know to remove parkarizing is a blaster (beads or alum oxide)... If the finish that was on your gun started to thin out once the bore cleaner was applied, then it was NOT a park finish. ( Bill is correct )
If your firearm was already a park style finish, then I would apply that type of finish back on it. Most of the 10-7 38's I've seen were blued which kinda makes me think it got some type of matte finish later in it's life. If you would prefer the blued finish, then I would recomment taking it to someone who does this profesionally. There is a lot involved in restoring a polished blue finish that the ordinary guy can't accomplish at home easily.
Pictures of your firearm would be nice so we could help you further...
Last edited by TheOldMan; 09-06-2011 at 12:45 PM.