So... you have 500 rds of paper killing stuff and 500 rds of zombie killing stuff. You go to the range and shoot through your FMJ paper stuff and head home to reload your zombie killing stuff... My question is... how long is ammo good for? What is its in an airtight ammo box? What is its sitting on a shelf in its box? What is its loaded in a mag? Does moisture from your hands do any long term damage to the casings? Does load size make a difference? Are some calibers longer lasting then others? Teach me... I'm a Padawan and want to someday be a Jedi. (bountyhunter actually... Boba FTMFW!!!) Good lord, I hope Im not getting too old for Star-wars references.