I normally use untreated walnut hull, however... The Lyman tufnut treated with polishing compound was all they had. I used it as normal but when I checked the cases I saw a lot of the compound on the cases. I know I can wipe it off the outside but what about the inside? Do any of you wash the cases with soap and water to remove it? Perhaps there is a better way. If so please share. Thanks. Wanna kill these ads? We can help!