stop for a minute and discuss "cook
If a round of ammunition is not surrounded
by a firearm chamber, but is set off, the
powder begins to burn. But since it is not
contained within a chamber, it quickly pushes
the primer out or pushes the bullet out
of the case. The powder then just "burns"
and does not "explode". In all
cases today, we saw many "cooked off"
rounds, but no bullets left the magazine.
In some cases the primers were pushed out,
and in one instance, we could plainly hear
the primer "Pop".
This is the damage behind the mag.