Very interested to hear how you know he did not. The key word is KNOW.
Because there is zero evidence that Scott shot Slager with the taser.
Because Slager never said that Scott shot him with the taser, and nowhere in any of the reports or recordings that have been released has anyone ever said that Scott shot Slager with the taser.
Because Scott would never have had the opportunity to shoot Slager with the taser. There is no doubt that Slager shot Scott with the taser - so, when did Scott have enough time (and separation from Slager) to reload the cartridge so he could shoot Slager?
Because I live in the world of evidence. You can spin all of the hypothetical possibilities of what might theoretically have happened between Scott and Slager. If ya can’t prove it, it didn’t happen.