Ritchie
Member
With a fresh load of corn cob media, I squirted in about 4 ounces of soft scrub cleanser. After about 3 hours in the vibratory tumbler, .223 cases are bright and shiny except for the annealed area. Also, the Frankford Arsenal tumbler has a small radius at the base of the center post. Media activity was low. I installed a small plastic funnel upside down over the post and the media moves much faster. The active ingredient in the soft scrub is calcium carbonate, chalk. Before this, I tried powdered chalk refill for chalk lines, but it had little effect.