I was trimming and resizing some used 3006 in to 8x57. Some were pretty dark and ugly. I use a Lee case trimmer that goes on a drill, after chamfering I picked up a peace of crocus cloth and gave the brass a spin in the drill a very light buff with the cloth. In 2 seconds or less, brighter than new. Never been much for polishing brass before. Anyone else ever do it this way.