I had some dark looking, tarnished 30 cal 190's that I threw into the ultrasonic cleaner the other day that turned out nice. I used the Hornady cleaning solution used for brass cases.
For experimental sake, I thread a handful into a vibratory cleaner w walnut shell. Not gonna do that again. They came out clean but with a dull finish.
I'm loading these for subsonic 300 blk , so I'm not too concerned about it.
Anyone have any experience with cleaning bullets with ultrasonic cleaner? I have some 180 Accubonds that have green corrosion on them. No idea why as they aren't even a year old. Thought I'd give it a go, but also figured I'd ask here.