This has been asked for more than once, so it really belongs here:
http://www.pyrobin.com/files/BP%20powders%20table.pdf
This is a table showing all the standard classifications of grain powder, including mesh sizes and "held/passes" percentages.
Lloyd
BP sizes, types, and classification table
Moderators: richardh08, Boophoenix, Lloyd
BP sizes, types, and classification table
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