I'm kind of surprised that there hasn't been more of a push on ammunition regulation. Devil's advocate for a moment, it would be easier to limit legal access to ammunition in bulk than it is to limit access to firearms and magazines. No grandfather clauses to worry about. Require sales be through licensed dealers, require background checks, then limit the amount which can be purchased to "reasonable" amounts. I can imagine the arguments made during a court action in favor of the restrictions... "Requiring ammo sales to go through NICS checks will reduce the ability of criminals to simply go to WalMart and buy what they need to commit crimes. Limiting the amount which can be purchased will reduce the ability to commit mass murder like Sandy Hook, etc." When a 2A argument is raised, the counter-argument is "how much ammunition do you need to protect your home from a burglar? You don't need a thousand rounds. You only need the ammunition in the gun, and maybe a reload. 50 rounds, tops. A hunter needs no more than 20 rounds to check the accuracy of the gun and put meat on the table. Even competition shooters only need a hundred rounds or so to go through a competition." I can also see them looking at the number of rounds used by LEOs per year (our court security staff issues 350 rounds of ammunition for training and qualifying per year) as a guideline for what is "needed." And, I can see some judges going along with such a proposal as "reasonable."