I used to clean my little '63 Remington in an ultrasonic cleaner. I worked in a machine shop where we ran screw machines 24/7. Late at night we'd break out the little remington and shoot in the shop for entertainment. Then take off the grips, clean the revolver in one of our ultrasonic machines with Windex in it, blow it dry, oil with WD-40, and it was good to go.