How long will powder last once it is opened? I have a can of 777 and a can Pyrodex P that I bought and opened two years ago. I have been storing them in my basement in a plastic box with a lid that I store all my ML stuff in. Is this powder still good or should I get some new stuff?
Can't address T7, but Pyrodex seems to lose significant "power" after times of a year or so. Pyro still goes boom, but has lost it's zip. Real BP, on the other hand will be useable 100 years from now . . .
Someday I hope to be the person my dogs think I am . . . The only true cost of having a dog is its death. Someone once said "a nation of sheep will beget a government of wolves." Shiloh Sharps . . . there is no substitute. NRA Endowment Member
![[Linked Image]](http://i25.photobucket.com/albums/c66/wildswalker/siglinepic3.jpg)
