I got tired of spots and the occasional corrosion. Granted I tumble in stainless media. What has worked exceeding well for me and is not tedious is put some new untreated media in your tumbler. Put a little car wax in and let it disperse for quite a while. Put the wet cases in and let them tumble for about 10 minutes. Problem solved. NO moisture and beautiful cases that don't tarnish. I then put them in vacuum sealed bags.
