I was going to use a different title, but thought that may offend too many people. Anyway, tumbled a whole bunch of 9X19, and found some casings with the media stuck on the inside. It wasn't a static charge thing, because this never happened with the .45 ACP brass. These happened a lot on the MFS- stamped rounds, and when cleaning them out with a toothpick, I found the media to be stuck to something gummy inside: Would you say that these are safe to use? I remember adding some polishing compound to the media, but I tumbled it for about 30 minutes before adding any brass, to try to distribute it throughout the media. Wanna kill these ads? We can help!