Tip for Today: you can store 14 each Federal 550 packs in a GI Fat 50 ammo can. Might be handy to know some day.
Heh, I think you read my mind.
As to my comment on the bullet itself going bad, I'm more worried about oxidation and its effect on bullet diameter. I've see ancient 32 S&W Short cartridges with oxidized bullets that would have caused over-pressure if shot w/o a bit of clean-up. I'm guessing copper coated would be better for long term storage?