Quoted: I was under the impression that the general concensus was that ammo outside of a weapon was not dangerous, even when triggered?
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Who told you that? The bullet still has gunpowder in it, which in and of itself is dangerous even in small quantities found in an individual round if you do something stupid.
No compression of the force to drive the bullet in a particular direction. Or was this literally dumb luck for the kid? |
When a bullet fires from a gun, the brass casing expands to release the bullet. The casing itself is supported by the chamber, meaning it cannot expand any further because it is being held together by the chamber. Thus the path of least resistance for the hot gas to escape is by pushing the bullet down the barrel.
If you remove a cartridge from the barrel and leave it completely unsupported, the path of least resistance will be to rupture the case. Pieces of the brass case and hot gas can still escape from the round at high velocity and do some damage.
In this instance the kid had the cartridge in a vise...that may have been enough resistance to cause the gas to escape by pushing the bullet, or it could have simply directed a rupture of the casing on a side of the cartridge that wasn't being gripped by the vise. If the bullet was pushed by this, I doubt it was traveling at full velocity...but apparently it was still moving at a good enough clip to do some damage.