I'm lower elo and kind of just assumed that whenever you got in a fight with someone you would just crouch, spray, and hope the shots would hit. I never undershoot how people ever won long distance fights with this method until I learned that people only shot a couple bullets!

Bonus: taking a few steps in between each burst also feels really nice because you have to let the recoil settle any ways so you might as well move in between shots. This made a world of difference already!