Hi there, today is my first time using an ultrasonic cleaner for my brass. The specs on mine are 10L 600W heater and 240W OSC power. I did 100 cases of brass using heat distilled water and a squirt of dawn. I degassed for 5 mins then run two cycles of 20mins. Cases feel squeaky clean but I still see black carbon on the inside and primer pocket (see pics). Is this the expectation or does that mean they are still not clean?
Is there an alternative solution that you recommend?
Is there an alternative solution that you recommend?