Really cleaned up my .270 Win brass. I don’t reload often so I couldn’t justify buying a wet tumbler. This media works great although it’s a bit dusty. I think that’s just the name of the game though. I thought about adding some additives but decided to try it out as is. Performed beyond my expectations. I’ve attached a picture. Primer pockets still had some grime but some where perfectly clean. I believe it’s beyond expectations to expect perfectly clean primer pockets from a vibrating tumbler. All together I would highly recommend this product.