Black Powder (Ball Mill) Newbie Questions APC Forum
This article is informative and a good place to start. I haven't tried it yet. I have done the CIA method (alcohol precipitated BP) and it produces powder worthy of respect. I did a small batch (500g) as a test of the method, and found it to be useful powder, infinitely better than green/mortar+pestle stuff, but not close to ball milling.