The only way a Sig Sauer - the standard side arm for the Royal Newfoundland Constabulary - could discharge a round is if there was one already in the chamber.
So a bullet that skips off the floor and lodges in a wall other than on the range?
Figure it out for yourself.
Incidentally, that’s why some organizations call it what it is - a negligent discharge -not an “accidental” one.
-srbp-