I got thinking about this today. How is ammo supposed to be stored? I mean for your average person that keeps it in the house and doesn't expect it to last 50 years.
I had some ammo cans but got sick of digging them out so I put it on a shelf. The humidity is somewhat controlled by air conditioning in the summer and I don't figure any ammo really sits around for more than a few months so I have no worries.
What about storing it for longer periods? Is moisture the only concern? I know WW2 surplus still shoots fine if it was stored in a sealed can.