Would love to hear from experience some preferred methods to clean brass that has been fired with black powder. Most of my large caliber guns (40-65, 45-70, 45-90, 50-70, 50-95, 50-100) are loaded with smokeless (4227, 4198, 4759, 5744, Reloader No.7). Some of the long range clubs require shooting black powder. I tried it! what a mess to clean up. The guns require a little hot soapy water but what to do with the fired black powder cases???? Other than soaking the fired cases in hot soapy water; would like to hear from some experienced big bore long range shooters their preferred method of cleaning up cases. I dump my smokeless cases into a vibrator or a tumbler with walnut shell & polish media and then wash them with a mild soapy water solution and stainless steel pins in a large tumbler. They come out gorgeous! The black powder cases pose a challenge! What chemicals do I need??