Thread: Tumbler or Sonic cleaner

Each do different things, ultrasonic will clean inside and out and get cases completely clean including the thin layer that stops the case tarnishing. Tumbling will remove adhered carbon such as around the flash hole area that ultrasonic might not, but doesn't remove some contaminants such as grease/oil etc that the media slides over. Each have their place depending on the state of the brass, although fine scotchbrite used manually will probably remove the small amount of stuff that ultrasonic fluid won't.

Post cleaning care is different too, the cases need to be dried after us cleaning and then thinly lubed over the entire outside to prevent tarnishing - media cleaners need the flash holes and internals checked for stuck media.