1.) How long is a powder (newer smokeless) viable when not in use for an extended period of time?
2.) Does the powder become less able to function in its normal mode or would it possibly become more potent?
Has anyone used a crony on older, partially used, powder in hand-loads to investigate just how long it takes before it changes to where it just should not be used any longer? I know there are many variables but if the powder was tightly sealed in its original container and stored away, just when does it start to detrimentally start to deteriorate to the point of not being useful?
I know, I know…when in doubt, chuck it out! I will probably do just that but I would love to find out “JUST HOW LONG” these newer powders last. I have heard that black powder gets more volatile the older it gets but the newer propellants might be different.