Kinda like black powder on steroids tried some and liked it, the reason, because of the 9/11 thing a local supplier is quitting after 40yrs. Shame. But figured if I was going to something in the replica, may as well try the latest and greatest. Thing was that impressed me, the stuff does go off fast, and same pt of aim, for a 60gn Patched round ball load, I have to reduce by 1/2 to 30gns for the same pt of impact at 25yds. So that is what I will use if I can not get black.