different powders shelf life
 

I've read on this forum about Pyrodex shelf life after once opening, it's about one year, and then it starts to loose a little something. whats the shelf life on Black Powder. 777, and Black mag3 ? I don't shoot alot, so I don't wanna have to throw the old stuff out and go buy new powder all the time. I also demand the best consistency out of the powder I use, I feel I owe that to the critters I hunt.
Thanks Steve.