Re: How to Polish charge Holes?
Is the revolver having problems ejecting the brass?
The rough surface may be fouling and just needs a good cleaning with a brass brush and powder fouling cleaner. (Hoppes no 9, gunslick foaming bore cleaner, etc).
If the chamber walls are truly rough then here is
a nice easy power tool friendly way without the risk of ovaling is to get a wood dowel that is about 1/8 in smaller than the chamber and make a cut on an end down the center about a half inch. using 600 grit sandpaper cut two 1 inch strips about 1/2 inch thick. Put the two strips back to back and slide them into the cut in the dowel. While lightly holding the sand paper strips in your hand turn the dowel clockwise to get the sand paper strips to wrap around the dowel. Chuck up the dowel in a drill and insert the end with the sandpaper in the chamber. turn on the drill on a slow setting and try to keep the dowel away from the chamber walls. While the dowel is spinning push the dowel back and forth like your honing a cylinder. only do it for about 10 seconds and check. Remove as little material as possible.