I was fortunate enough to come across Yul’s post on Strato Sheen when I first started shooting CAS and wet tumbling. It has made things really easy. I just processed some brass this weekend and there were a couple of really nasty tarnished pieces that must have been on the range in the elements for long while. Used Yul’s mixture and all came out looking like new. Besides the mix the key is to let them tumble for awhile.. My process is:
Tumble with warm water and a squirt of dawn to remove gross contamination (mud, grit, etc) for 1 hour or whatever you have patience for.
Pour off the water and refill with Yul’s mixture and tumble for about 2.5 hours
Pour off the mixture and refill with warm water only and do about an hour of tumble rinsing to remove any leftover residue.
Set out to dry on a cookie sheet.
While it sounds like a long process the actual time spent “hands on” is very minimal. I hope this helps someone. Thanks Yul for the great contribution of knowledge!