But, if we're assuming gun control works, we'd have to assume even a mild inconvenience is still an inconvenience.
I think sometimes those mild inconveinences make people do things more because they hate the idea.
My state bans fireworks. There are fireworks here quite often, because I live within 20 min of two states that don't ban fireworks.
It is VERY common for people to go to those states. So just picking something up when I was there already is easy enough.
Heck many people when I was a kid would go to the next state for cigarettes just because the taxes were so much lower that they saved significant amount of money on them. They would just buy several cartons each time they crossed to the other state.
I'm not saying banning certain types of guns won't work but I will say banning them when you can very close by get to a place that doesn't ban them will certainly not work.