People will do in combat what they've done in training. It's the whole point of training
"train as you fight", "training scars" and all that. There's an old saw about US police officers catching their ejected revolver brass and putting it in their pocket in a firefight. Whether that actually ever happend or not, I dunno, can't find anything definitive in a couple of minutes. But the global point is true that what you train, you'll do live.
And to bring it back to my civvy cnut shooting world, you see it simple things with people training movements by the numbers, choppily with pauses, and then do exactly the same thing on the timer.