In 25+ years of shooting and reloading I have done it several times for different reasons and from brass bought bulk tarnished or given to me
and didn't had one single issue.
I have tried many types of media, conventional and unconventional. This includes expensive media used in restoration of expensive
automotive parts that you can get with different abrasive grades and it is designed to perform w/o creating too much dust or any debris
that might obstruct expensive parts.
Also from the unconventional media, reptile pet bedding, rize, tartan, etc... even biodegradable airsoft balls and simply 22LR washed clean cases.
I never took pictures of this so today I went downstairs in order to replicate this process. I found a good bunch of old already cleaned
22LR cases and some once fired very dirty brass.
I think I am a tad short on the 22 brass as media but I have it in the tumbler now to see if this time is any different and will post the results here.
Of course I would not try to reload for match loads like this but also didn't find the already primed brass that went through this process to have any huge inconsistencies assuming it is properly resized and prepared like any other brass.
There might be some minor dust but nothing to be worry to be stuck anywhere. All we need is a clean dry towel after this. We'll see.
Washed 22LR "media"
Media in the tumbler.
Some nasty brass in the lot...
All together brass to brass, in a nice healthy tumbler without any powders/solvents or chemicals of any kind.
BTW toss in there some small clippings of paper towels. They will catch up most of the dust. Stay away from the dryer sheets that only make things worse.