The Joker....so you're saying it could have been worse with a glock pistol? Thats hard to fathom, but it was a packed house and people were trapped. Anyway, he tried to join a shooting range club but failed, so I'm wondering where he did practice or if he practiced using a gun at all. Would he have had to have some training to know how to shoot the weapons he used? It's too bad he didn't shoot himself while he was learning to use a gun.
The other thing I find interesting about Holmes is his choice of study in college and his interest in subjective reality of the mind vs reality. He must have convinced himself that what he was doing wasn't real or he else he couldn't tell the difference between subjective and objective reality anymore. I sometimes wonder if some of those violent video games aren't having that same effect on people.