I started out with a rcbs sonic cleaner. Did ok. Wanted better. Doing a batch right now with the SS pins wet tumbling. Have been reading about the SS shavings. May try that. Back to the rcbs chemical for your ultra sonic cleaner. Go research the ingredients. I quit using that nasty stuff once I found what’s in it. Pretty nasty stuff. Kept the rcbs ultra sonic cleaner for cleaning gun parts but don’t use the rcbs stuff.