You do realize that the whole "ammo shooting in a fire" thing is complete, hollywood made BS.

Next time your at a campfire, take a bullet and throw it in to the flame, watch what happens.

It'll just pop apart.

The "firing" of a bullet is dependent upon the pressure created by the containment of the bullet in the champer, and the expansion of gas in the barrel.

Withouth these factors, a bullet is pretty much useless.

If a box of your ammo were to catch on fire, you'd find nothing but a bunch of seperated bullets/casings.