I didn't think there were fuels or oxidizers in Smokeless powder?

Whereas Blackpowder is a low-explosive pyrotechnic mixture of fuels and oxidizers where the ratio can be shifted, smokeless powder is made of Nitrocellulose and Nitroglycerine. Both of which are chemically formed high-explosives, where the formula is more or less fixed.

It was my understanding that the differences between powders is a result of different blends of NC/NG, and then changing the size and shape of the powder itself, not by using different 'types' of NC and NG themselves.

https://en.wikipedia.org/wiki/Smokeless_powder#Physical_variations

gatnerd said:

I didn't think there were fuels or oxidizers in Smokeless powder?

Right, but for Nitrocellulose you have the nitration level (roughly the amount of NO₂) which is not the same for every NC, so its formula is not that fixed.

"Right, but for Nitrocellulose you have the nitration level (roughly the amount of NO2) which is not the same for every NC, so its formula is not that fixed."

Ahh, thank you. I hadn't realized that there were different grades of NC; I had thought it was like NG / RDX etc which are more like a fixed substance.