First post and glad to join you all.
In my youth i had a 54 cal renegade for extending the dear season and that gun is long gone. reacently I have begun a small collection of old german bolt action rifles and among them are two that i think i am going to shoot as black powder cartridges. Back in the day i picked up two cans (yes they are steel cans)of Goex Ff superfine powder. It must be 30 years back and i have o idea how old it was when i bought it at a sale of a fellow who had passed. The question is does it ever go bad. it is still dry and is not clumped up or anything. Same question for a couple of cans of Pyrodex that is about the same age.