You're right. The problem is I'm trying to answer nonsense with sense.I'm not sure if you really meant that? It doesn't really make sense in terms of a pro-gun argument. Essentially, it says: "If there were more guns, people like Holmes would find even worse ways of killing."
I'm not trying to prove you wrong, by the way, it just struck me as off.
lain:
Perhaps I should have said: Of course a person trying to defend themselves can miss and hit someone they didn't intend to. But they certainly aren't going to hit him with no gun.