Post by Mike
So HO doesn't like loud sounds; an exercise for the techrats then.....
how many milliseconds of annoyance would HO have to to endure were a
twelve bore pointed in her direction when fired from, shall we say 3
metres? I believe the pellets might leave the muzzle at a fair
proportion of the speed of sound but not the same speed.
At approx. 850 mph (muzzle velocity - given the estimates I have found on
t'internet) HO would be annoyed for approx. 0.1 secs.
However, this doesn't take into account the amount of time that she would
be intrigued by the detonation  flash.
 I know it's not a 'detonation' but an 'explosion' - due to the
combustion speed through the material - in case any real pedants show up.