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Old June 11, 2021, 11:42 PM   #8
Senior Member
Join Date: May 9, 2016
Posts: 252
I understand. But if you use a ball mill, you will obtain a super fine grade powder, something like 4f or even finer. I know what I'm talking about because in my country the only source to BP is to make it yourself. And I use to get consistent quality of 2f, 3f and 4f homemade powder.
The only way is screening it. Sorry for the bad news...
Old US Army manual Improvised Munitions Handbook includes a couple BP recipes that could be useful to better understand the wet process. Maybe you can download it online as a pdf.
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