Update: I poured out each pound of powder on a white sheet of desk blotter paper, looking for any red/rust dust. Four pounds of IMR4350 and three pounds of IMR3031 all clean. Whoopee!! I didn't check the Norma 200 or the half can of IMR4064, but will if I ever use it. I don't need the Green Dot or Blue Dot, Pyrodex, or any of the black powder, so will probably turn the smokeless into fertilizer. Can the same be done with black powder.
Rev, find a group local that shoots BP. they will give you everlasting love for those cans of Holy Black.
