No, burning ammo will NOT pose a serious life threatening safety hazard to firefighters. If anything the fire itself is more dangerous.
https://www.youtube.com/watch?v=3SlOXowwC4c
This is a video by SAMMI showing the results of various damage to ammo, including driving a bulldozer over it, or burning it. The conclusion is that normal bunker gear will protect the fireman. Again, the fire itself is the main threat.
Large canisters of powder are a different issue - as is storing more than what local code dictates as a safe limit. I used the word "dictates" because that is how it should be taken - others are telling you your idea of safe doesn't apply. Not even. Hence the guys getting busted for having pallet loads of ammo, powder, etc. It's part ignorant fear of them doing something with it, and part Life Safety Code for fires. You are generally guility until proven innocent when it comes to storing larger quantities of ammo and other flammable substances simply because the average consumer isn't trained nor are they expert. Constitutional enthusiasm isn't a protection against explosive detonation - prepared ammo isn't the problem, but bulk powder can be.
For all that barbecue propane tanks and cleaning chemicals under the sink pose a greater danger in a house fire, most people don't have hundreds of pounds of powder in storage.
Here's the tie in for sheer hypocrisy - Firefighters KNOW this, but if there is ammo popping off in a house fire, they won't go in.
http://www.thetruthaboutguns.com/20...ditorial-store-your-ammo-in-a-fireproof-safe/
Despite professionals understanding the actual risk involved and that it's less hazardous than other household items cooking off, ammo leaves the crew with the perception they will get shot. So, too bad, your house burns to the ground.
The hypocrisy is they claim to be the only ones professional enough to put it out - but they won't in many cases. "Too dangerous."
PS Military storage of ammo is done in earth berm bunkers, be careful about storing it in clean dry temperature controlled environments. It doesn't mean in an air conditioned garage under the roofline of your house. Normal ammo storage is in vapor tight packaging - ammo cans with seals and dessicant. The bunkers are vented to the atmosphere year round, it's the ground temp and surrounding earth that conditions it. Not a A/C unit.
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