My favorite FPS games is Counter Strike. In that game they have no bullet travel so bullets hit their target instantly. If you are standing still your first 2 bullets will hit their mark almost dead on. So the goal becomes finding times in combat to stop moving and fire off perfect shots. In PS2 against good players. We both ADADA but because of bullet travel. I feel more like I am guessing while I shoot. You never truly know where the enemy is going to be or where you bullets will be when they get there so You just sort of make a best guess while you track them and they go back and forth. This even happen at pretty close ranges inside. IMO This means you just don't get the feeling that you made an some awesome shots as often IMO.