I happen to have one of those cheap powder horns from India filled with Schuetzen 2f in my basement, that I was using as a priming horn for my Pedersoli 1795 Springfield.
My horn is empty,since I charge it for hunting season opener.
However, I have come to like the Goex OE in 3f for most
everything. It compares well to Swiss in my use, and it
is Yankee made. I did use that Black MX while it was cheap,
and a bunch of false synthetics, pyrodex ,triple 7 and that
MX--- but for the most reliable ignition you cannot beat
good ole Blackie Boomie!