06-18-2015, 10:47 AM
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#3
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Quote:
Originally Posted by Jerry Parise
This may be a dumb question, but, how does one know when old powder is going bad? I only store shotgun powder and I assume if rifle powder can go bad then so can shotgun powder.
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from the Alliant Powder site
How to Check Smokeless Powder for Deterioration
Although modern smokeless powders are basically free from deterioration under proper storage conditions, safe practices require a recognition of the signs of deterioration and its possible effects.
Powder deterioration can be checked by opening the cap on the container and smelling the contents. Powder undergoing deterioration has an irritating acidic odor. (Don't confuse this with common solvent odors such as alcohol, ether and acetone.)
Check to make certain that powder is not exposed to extreme heat as this may cause deterioration. Such exposure produces an acidity which accelerates further reaction and has been known, because of the heat generated by the reaction, to cause spontaneous combustion.
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