I tumble my spent brass with the spent primer still aboard to keep the flash hole open. Still a lot of unburned powder and primer compounds end up in the media, so it's has to go before it gets toxic!!!
I clean the flash hole on the case prepper. Lots of nasty stuff from that.
Sometimes I load the heck out of the tumbler and other times not so much. So I play it by ear and when I think it's too contaminated to keep using, out it goes.
So how often do you dump your tumbler? Same, or do you have a schedule?

