Originally Posted by Ted Schefelbein
For what it is worth, only French proof powder T was smokeless. PM, PJ, and PS were semi-smokeless powders. 1900 was when powder T came into use, and the others faded away as the century progressed.

The French abandoned Damascus and black powder, along with semi smokeless powder, a long time before most other gunmakes.

Best,
Ted

And were first to develop smokeless propellants in what, something like 1884?