I can assure you setting one off is NOT at all what I want to be doing. It's just that there are always gaps and spaces among storage items stacked on shelves, in drawers, etc. so I wanted to see how to take advantage of such gaps. I had thought of Ziploc bags, but then was wondering, the risk in a bag of ammo is the end to end (bullet to primer) arrangement (in random inside a loose bag) so the maximum risk would be if they were end to end "tubular", so the question then became what is the risk of that end to end arrangement for 9mm? One idea was, IF this was safe, just to wrap the cartridges in a roll, like you do with coins, so maybe you have 5 or 10 in a wrapper. Anyway, based on the points raised in this thread, I don't think I will be doing any of this and just stick with the factory packaging for now. By the way, are the military ammo boxes THAT STRONG as to contain explosions in the event of the whole box being burned in fire? Somehow I find that rather unbelievably amazing (?) or is the cartridge only powerful when enclosed inside the narrow chamber and barrel of a gun?