Black Mag 3 powder

[Larryjk]

I have part of a container of Black Mag 3 black powder substitute on hand. I really like it but have not been able to find more for sale. It really works good in my 1864 half stock Hawken in .54 caliber. It is clean burning, accurate, and very little mess to deal with. In fact, I always use it to burn the black powder crud out of the barrel after shooting real black powder. Instantaneous ignition with No. 10 caps. It was made several years by ARCO of Florida and then was not available for a few years and then reappeared for a year. It has not been available again. Does anyone know what became of it?