I have a good sized ultrasonic cleaner which is great for revolvers, ok for bottom feeders but you have to strip them down to re-lube them, so you may as well clean them disassembled.
It will clean brass but the brass needs to be stacked rim down for it to do a good job. Stacking the basket full in that manner is a major PITA.
I have done it a couple of times, but mostly I can find other ways to spend my time.
That's interesting because the little ultra-cleaner that I use I just dump the brass into the cup (see photo in orig. message) and let it go. I do stir it a little.