Approximately 1/3 of Americans own guns.

7% seems low just because so far as I can tell it's 7% of adults in American not 7% of those who own guns.

I haven't ever fantasized about shooting someone. Throttling them to death? Yeah. Dropping a piano on someone? Certainly. Shooting them? No. For one thing I don't want to clean up a shooting. But for another at the point where you're wanting to kill someone or maim them a gun is just impersonal and hands off. I'm not a murderer. I would absolutely have to be pushed to that point.

But I have met quite a few people who really do just want to shoot someone. They are looking for a reason.