@definitionofinsanity
(I don't know how to quote so I'll copy and paste)
"Smokeless powder is actually older than Dunnite (by about a decade or two) and, AFAIK, has never been used as a propellent, but as an explosive filler, in ammunition. From what I recall, it quickly got dropped because it...
So in chapter 34(?) they mention the haber-bosch (which makes ammonia) method in ammunition production, so I thought they were using black powder, which shouldn't have enough power to reach the tops of the ramparts in the castle siege. So I did some digging.
Turns out, they weren't making black...