I'm thinking that in the event of a house fire it would be good to keep my ammo stored in a manner that would be less of a danger to firefighters. I know that some gun safes have ratings for certain temperatures for certain amounts time (i.e. 1200 degrees for 30 minutes). What ratings would be adequate for a normal size home? If a fire burns hotter or longer than the rating would a typical fire resistant gun safe contain any ammo that might go off. Does it make sense to break the ammo up and store it in multiple smaller lockable fireboxes? For quantity, I'm talking about a few thousand rounds of mix caliber, no black powder.