Looking up in my old manuals and don't see any reference. I guess you want to make sure its not a "semi" smokeless powder. Did a simular deal with Norma MRP from the 70's . Stuff is hotter than expected. Went over pressure quick. Might want to call alliant at 1-800-276-9337. Curiosity got the best of me, and I called, and they don't know what it is.