I washed them all on the hottest, longest cycle with "Cascade" and a good dose of "Lemi-Shine". They really came out nice and clean. I don't know why I didn't think of this before, we always used to wash our shotgun hulls this way. They came out spotless as well. I did all 2,500 cases in 2 loads, then spread them out on towels out in the Sun to dry. Now I don't have to worry about scratching my resizing die.
As I mentioned I got this stuff from Brassman Brass. He is located in Las Vegas and it is all police range pick up brass, so it was quite dusty and dirty. The dishwasher really did a nicer job than I thought it would. Even the inside of the case mouths were clean. Bill T.