Why does anybody need more than 7 bullets at a time?

[jeff47]

91. I'm still waiting for a difficult to solve problem....

We can get a lock box, but I don't want to store my mags in a lock box that a ton of other people have a key to.

Something that resembles the mailboxes at an apartment complex is cheap, easy to install securely and would allow your own key.

Even at a large range, how does one track the mags going in and out?

There's this thing called "paper". You can write on it. You're talking about a problem libraries solved a very long time ago.

Even if there was a complete ban, one could buy hi capacity magazines for 100 or less.

From who? Drug dealers are gonna make way more money dealing drugs. There's far more valuable things to smuggle when you're talking about something that's fundamentally a convenience item. So your suicidal mass killer is not going to find any sort of existing smuggling infrastructure from which he can partake. Doesn't mean a none of them won't go through the effort to smuggle some themselves, but they won't be able to walk down to the corner and say "hey buddy, got a big mag?".

Because if what you propose was true, then we'd have tons of fully-automatic weapons getting smuggled into the country for suicidal mass killers to be even more effective. Yet that doesn't happen.