Thread: 38 Spl. 158gr LSWC- How much W231 are you using?
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Old 03-07-2011, 11:37 PM
mkk41 mkk41 is offline
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W-231 and HP-38 have always been the same powder , made by the same company. Hodgdon never made powder. Winchester/ Olin Chemical once owned the St.Marks Powder company , now owned by General Dynamics. They make most domestic powders.

http://www.gd-ots.com/ , click on 'propulsion'.

Differences in data can be normal lot to lot variations. Powder making is not 100% 'exact'. But they get very , very close.
Last edited by mkk41; 03-07-2011 at 11:43 PM.
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