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Old 07-08-2020, 12:04 PM
Typical Buck
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Join Date: Aug 2007
Location: Central Connecticut
Posts: 766

Swiss Null B is considered to be the fastest priming powder.
There is Swiss 4F that's sold by the lb., and then there's Null B which is sold in a 1/2 lb. container.
It's reputed to be made from the factory floor sweepings which makes it super fine and super fast.
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