I don't know what you are talking about. Bullets always hit where you aim, they just don't do it instantaneously. If your target is moving relative to your position, then you have to compensate. Hitscan only makes sense for the Beam Rifle and Laser. For everything else in Halo, it's asinine. I like knowing that I am that much better at the game because I know the weapons so well that I can lead my shot. It makes long-range kills so much more gratifying.