Probably not. If he had been using rapid fire with a scoped firearm, the accuracy would have been much higher, and fewer missed rounds.
My understanding is he fired for about ten minutes. Ten minutes of fire even at semi automatic rates, assuming reasonably competent magazine changes, would have been at least ninety rounds in a minute. Ten minutes translates to nine hundred rounds. Nine hundred aimed rounds would be much worse than the spray and pray technique he was using.
The problem with automatic fire, especially bump stocks, is that the rifle is not stable, it is jumping and it means the bullet isn’t going anywhere near where you are pointing, forget aiming.
When the crowd finally started breaking up and scattering, the aimed shots would have been a good choice to engage the targets, but he continued with the bump stock approach from the videos I’ve seen. So most of the bullets flew wild.
Oh, the M-16A2 I was issued in the Army did not have automatic fire, it had three shot burst. The reason was after the first two or three rounds, you’re not pointed anywhere near the target anyway.
