I tried finding a MSDS for Wonderlube and had not luck. At least not the stuff traditions sells. Sounds like snake oil to me. Most BP solvents are. And they are grossly overpriced.
Graphite.
SFAIK Swiss has no graphite.
Graphite is added to the powder, especially lower grade powders to 1. Make them look like a better grade of powder. 2. Make them flow easier.
I don’t know what the Major market for BP is in the world today but until a few years ago it was the military. Its used in fuses and boosters in propellant charges for field peices and naval artillery. The military, in this context did nto care about fouling all that mattered was that the powder was good enough to burn properly (like in grenade fuses, and would ignite properly when used as a booster for large propellant charges. Even the 105 Howitzer used a BP booter in the primer tube to properly ignite the main charge. Thus the production at Moosic at least went to the military and IIRC what bill knight wrote or told me about it that all dupont used it for was military powder. I have no idea if the military is still the prime used of BP or not or it Goex was the supplier. But neither Dupont made in Moosic, G-O or Goex was of the quality of the powders available in the mid-late 19th c. And I can say without reservation that the late production at Moosic was $#@*. Why? Because is was made with well water contaminated with sulfur oxiding bacteria that would eat the sulfur while the powder was in storage or in the can. ML shooters did not notice this but PBCR shooters using drop tubes sure did. THis is from Bill by the way not something i made up.
The British military, back in the BP era and perhaps beyond would not accept powders coated with “black lead”.
One of the best ever patch lubes was Sperm Whale Oil. From the head not the rendered stuff. But its not available except maybe in Japan who still kills whales SFAIK. Some of the best patch lube I ever used was the old Sharps Rifle Co. lube recipe. 1:2 BW: SW oil by weight.