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Old October 14, 2012, 08:52 AM   #31
Picher
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Join Date: December 14, 2004
Location: Maine
Posts: 2,868
I believe that the Hodgdon Powder Company started by selling WWII surplus bulk powder stored in boxcars for 25+/- years. They re-packaged it and it was about as good as the day it was made. It probably wasn't exposed to extreme heat, however.

I have a few cans of powder that I bought more than 25 years ago and it's still good, but it's been stored in cool, dry conditions.
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