So the shooter may not be familiar with guns? He didn't understand
he needed different ammunition with a silencer? So more amateur mistakes.
The takes I've seen didn't necessarily indicate this at all. The idea was more that he knew the pistol wouldn't cycle properly with that ammo and a suppressor, so he was ready to do it manually, and did in quick succession in the heat of the moment, so unlikely to be an absolute tyro.
It's not clear whether the pistol had a built-in suppressor or was fitted with a silencer.
He kept shooting while approaching the victim until he was satisfied the victim was still, and I guess judged that wasn't going to change, then made his way elsewhere.
The video I watched is at a Twitter link in the OP here:
https://www.democraticunderground.com/100219787370
If you view it, you'll know as much as me.
You may have to click through to Twitter to view the video. I saw a "! Not found" notice in the OP itself, but the tweet is still there as of this moment.
The footage may be available elsewhere by now, but I suspect the MSM may be coy about showing footage of an actual killing on air. I saw CNN's coverage, and they froze the video before the shots were fired. Their correspondent Rikki Kliem judged the killer to be a good shot and showing a calm demeanour throughout (that latter point was my judgement as well).
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