Useful approach: Anticipate common cover and stop at positions from which you can actually fire accurately.
01
How it works
Before rounding a corner, placing your crosshair on the likely enemy position speeds up a first accurate bullet.
02
Practical strategy
Anticipate common cover and stop at positions from which you can actually fire accurately.
03
Mistakes to avoid
Pre-aiming the nearest wall instead of the exposed enemy edge gives no advantage.