re: How old is too old for AMMO?

I would shoot it unless it has rust or corrosion on it. Just be careful with it if it slow fires.

I had a 3 1/2" 12 gauge shotgun shell "slow fire" on me when I was using a BPS. I guess I had gotten the shell wet before. I stood up to shoot a duck, pulled the trigger and then I out of muscle memory pumped to eject the shell before I realized it didn't fire. The ejected shell (which comes out of the bottom of a BPS) went off just as the brass was clearing the chamber. Blew the bottom half of the brass out the bottom of the shotgun and into the water at my feet. Scared the fool out of me when that blasted out the bottom of the shotgun. Took me a moment to make sure all my parts were whole.