Gert Odendaal
AH legend
Dirt dart, yes I am fortunate, Johan Greyling of JS Gunsmith is also the owner of self manufacturing ZAR black powder in any grade you wish for.The OP has access to all of the black powder he can burn but not all of us have that luxury when in Africa.
Powder, smokeless or black is only transported by means of ground or ship. I am told that the retailers in Namibia get together and when their combined orders are large enough to fill a container that order will eventually make it to a port in country. I was able to arrange (WELL in advance) to have a can of FFg delivered to a shop for me to pick up once in country.
I couldn't tell any difference between the Wano from Germany or the US made GOEX that I had been shooting. I believe that the black powder that Graf & Sons label is the same Wano but I didn't know that at the time or that is what I would have worked up my loads with. I use RWS percussion caps at home but CCI brand was what I was able to source in Namibia. I found that humorous.
I believe that with enough notice you could source shotgun primers and have a good chance of arranging to have whatever powder works best in one of those "modern" muzzleloaders.
He also is casting front loader cannons based on Historical correct cannons used through the wars in South Africa .