I don't think Clearshot is made anymore but I just found the chronology of the Black Canyon co.
of Whitewater, Co. They made
Black Canyon, then Cleanshot, then American Pioneer, and now Goex Pinnacle is made by the same co. All made with the absorbic acid or vitamin C base. They say Pinnacle is good but they said all the others were good to. If the real stuff is totally unavailable I can see using this stuff but if you can get black powder, it's by far the best, IMHO.