Thanks for the tip. Will get some when I run out. Have been using Lyman media enhanced with the occasional squirt of Mother's Metal Polish. Been using the same batch of media for years and it has yet to wear out.
I tumble multiple loads of various brass every week, snd I’ve found tug at while heavily used media will still work to clean brass, replacing it once a year or so means the media is more efficient at cleaning.
I actually save my “old” walnut nexus in a deist are container that I use to tumble really nasty range brass. When this media turns a sold black, I toss it.
My theory is new walnut media is microscopically tougher than used media, as while the pieces of media polish the brass they are also “polishing” themselves.
