My usual procedure for dealing with black powder brass is to de-prime it and then shake it in a jug of hot water. Rinse a few times and then bring in inside and soak it in some more hot water in the sink. After this I throw the wet brass into my tumbler for more cleaning / drying. I have been using the same corn husk media for the last few months, and I use it for both my smokeless and black powder brass. What kind of worries me about this would be contaminating my smokeless guns with black powder fowling via my smokeless brass. I am kind of hoping that rinsing the BP brass in water would remove the corrosive salts, and prevent it from getting in my tumbling media. After rinsing my brass it no longer smells like sulfur which I take as a sign that the water removed the fowling. Does anyone else use the same tumbling media for both black and smokeless brass? Any issues with what I am doing?