Well, I have always wanted to try this. So I ordered a tumbler from STM Stainless Steel Reloading Supplies | Tumblers, Seperators, Media & More!
and followed one of their handy tutorials on the site. Then the choosen brass was my nasty old .338 LM brass with 14 firings on it. It was very dirty and has only been tumbled in a vibratory tumbler a few times in its life. And once in a heated ultrasonic cleaner. Neither one ever impressed me. I always worried about the build up if I used a polish in the vibratory tumbler. It could cake or build inside and I hate cleaning the media from flash holes. That alone is train wreck waiting to happen. As you can see in this pic this brass was nasty, ugly and full of burnt powder.
So in it went with 2 TBL spoons of Dawn dish soap and 1/4 tsp of Lemishine.
Four hours later I pulled it out and rinsed it off. The crud that came out in that water was pretty bad. I am ashamed at how dirty this brass was. Here is the finished brass after only 4 hrs.
Even the primer pockets are clean and bright. The inside of the cases are as clean as the outsides. I am in love!!
So, I have tumbled in a vibratory with media, I also have a heated ultrasonic cleaner and now I have found what I should have bought years ago. If you want clean brass this is the ticket!!