What a wonderful thread! It is Saturday night afterall.
I've done it with some primed hulls that were damaged. Not much more than some pops. Now a small Coleman propane cylinder on the other hand will shoot an enormous jet of flame and do a decent imitation of a surface to air missle as it leaves the campfire.
Yes, most aerosol propellants will shoot high in the sky (fifteen/twenty feet,) but the key is to make sure they are bottoms up; otherwise, if they are pointed towards anyone, they could inflict serious harm.
When i was a kid in scouts (which is probably the most dangerous place for a young kid) we would throw everything that had the potential to be flammable into fires.
Boys need to be boys. Some get hurt, hopefully most survive. I believe that it is still an important rite of passage to do some dumb things. We won't always be there to protect them.
All I can think to say is; just about everyone has one in there family that surprises us every day that they can still breathe on their own.
In my family, that is me.
A cartridge cooking off is pretty harmless
unless, and there are so many possibilities that the unless is key, unless it happens to have a immovable surface behind it, e.g., rock or heavy backlog. In that case, the rock might act like a bolt face and the boolit could actually make some distance.
Newton's Law of "For every action, there is an equal an opposite reaction" applies here, that's why I can see why the case may actually pose more of a risk than the boolit since the boolit may weigh more than the brass in some situations and send the brass backwards.
Anyway, with the cost of ammo nowadays, why throw it in the fire?