Revolver, yes.
You notice their cops can subdue a subject without firing 15 or 30 rounds at him as is done here.
I notice in the video, the shooter missed with the first shot, but hit with the second. And he was not real close, either. I was suspecting a near contact shot when I first heard of the shooting.
Don’t get me started on rocket artillery based on sugar and an oxidizer.
It appeared, to me, to be about 20 to 30 feet away.
As you surmised, to me it looked like the first shot missed and the second one hit.
However, it takes a bit for a shot to take effect, so there might have been a hit with the first shot.