You will probably get the best results fastest if you strip and refinish both the butt stock and the forend. If you try to just do the butt stock, or worse just the effected are, you will never be satisfied with the color match. Quickest and best is to just strip both pieces, swell out or fill the dings, lightly sand (steel wool) the whole surface of both parts. Then apply a finish. It may not be the exact same shade as the other Hindies in the case, but the gun will look good.