Mine maxes out at 80°C. This seems to make the most difference in getting the primer pockets cleaned out. Approx 30-45 minutes running depending.Sorry, did not realize anyone had responded. I did pre-heat, ran the ultrasonic cleaner with the liquid at 50 C or 122 F. Should the temp be higher than that? I ran 3 30 minute cycles with nothing like the results I expected. I have tried on both cases that were fired years ago, and ones that were fired just a couple days before with the same results. Thanks for the advice!