I suggest you go buy a good bolt-action .22 with an aperature sight (Marlin makes a nice one), or a good air rifle, hire an NRA-certified rifle coach and go spend some time at the range.
That is IF you really wanna learn to shoot. Otherwise, just stick with the internet and video games.
Just looking for some relevant info that would apply to this discussion since the topic seems focused on the skills of this Beltway shooter.
Maybe kjam22 can shed some light on the use of laser sights--especially how it may connect to this here topic and this here particular killer.