I would be leery of polishing a forcing cone unless I could be very sure that the surface was perfectly centered. A cratex point or felt point with polishing compound on it will flex and follow the contour of the cone, if the forcing cone is misscut, off center or wavy you would be polishing the existing surface, kind of like polishing a bumpy road, it will be shiny but still bumpy.
I believe the Brownells kit centers the cutter on the axis of the bore and removes metal from the highest points first, like planing the metal down to a level surface centered on the bore. Once that conical surface is established polishing might pay off.
I believe the Brownells kit centers the cutter on the axis of the bore and removes metal from the highest points first, like planing the metal down to a level surface centered on the bore. Once that conical surface is established polishing might pay off.
