Reading a recent post made me think. I don't store guns or ammo in the car but do have a fair amount of loading supplies in the house. The house stays at a pretty fair temp, maybe 70 to 80 (90 at tops) F. I'm wondering how long my cans of powder will last? Humidity does change since I live in Western WA but not too bad. I've had cans of powder for over 5 years now and am thinking about loading up some rounds with them. Any thoughts?

Cherokee