[Skans]

It's not that easy to always distinguish gun fire from other sounds. Lower power rounds often sound like cheap fire crackers at a bit of a distance. I can easily recognize the sound of higher power rifle rounds, and some higher power pistol rounds.

If there is a succession of 3-5 shots, its easier to notice that as firearms fire because of the relatively even intervals between shots. This past July 4th - I could hear that someone was shooting a gun in my neighborhood. Sounded like a revolver judging from the intervals.