Toolmaker51 is correct about us cartridge reloaders. While my tumber is from Midway it is very similar to the one HF sells. I have used the ground walnut shells, but prefer the corncob. I dribble-in a small quantity of Turtle Wax Chrome Cleaner and toss in a couple of small pieces of Never-Dull and it cleans brass and plated cartridge cases remarkably well! I have considered a larger tumbler but at this moment this one is satisfactory. The project shown here is a great design!