[riverrunner]

I listened to the shots being fire on the video that is out there.

Having heard hundreds of thousands of shots from different firearms being fired, having fired a hundred thousand plus rounds myself.

I believe it was a 22 rim fired but then the recording on a I phone can be miss leading.

[raybbr]

YOU might be right. It probably was. But,a poster claiming that "...police officers know whether it was a 22LR or a more powerful centerfire rifle round just by the sound" is absurd.

I seriously doubt that the cops spend any more time on a rifle range than is minimally required.

[antidisestablishment]

Recorded shots cannot be identified. Recording equipment does not record full spectrum—shots and explosions all sound small. That’s why Hollywood employs Foley artists.