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**Mike Irwin** · August 4, 2011, 09:32 AM

The great thing about modern smokeless powder is that it's virtually impervious to water and weight changes due to humidity. It may take weeks or even months for a sample of powder to gain or lose water weight. And, due to the nature of nitrocellulose, the amount of water weight it will gain or lose is a very small faction of its overall weight, on the order of half a percent or less.

August 4, 2011, 09:32 AM	#9
Mike Irwin Staff Join Date: April 13, 2000 Location: Northern Virginia Posts: 41,381	The great thing about modern smokeless powder is that it's virtually impervious to water and weight changes due to humidity. It may take weeks or even months for a sample of powder to gain or lose water weight. And, due to the nature of nitrocellulose, the amount of water weight it will gain or lose is a very small faction of its overall weight, on the order of half a percent or less. __________________ "The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza Baby Jesus cries when the fat redneck doesn't have military-grade firepower.