Does the second ammendment protect the sale of ammunition

[petronius]

19. Not USSC, but in Herrington v. United States (2010) the court said:

In neither Heller nor McDonald did the Supreme Court directly address restrictions on the possession of ammunition per se. ( The District's requirement that lawfully-maintained firearms be kept unloaded was not challenged in Heller.) Nonetheless, from the Court's reasoning, it logically follows that the right to keep and bear arms extends to the possession of handgun ammunition in the home;  for if such possession could be banned (and not simply regulated), that would make it “impossible for citizens to use for the core lawful purpose of self-defense.” By the same token, given the obvious connection between handgun ammunition and the right protected by the Second Amendment, we are hard-pressed to see how a flat ban on the possession of such ammunition in the home could survive heightened scrutiny of any kind. We therefore conclude that the Second Amendment guarantees a right to possess ammunition in the home that is coextensive with the right to possess a usable handgun there. The government has not taken issue with that conclusion.

http://caselaw.findlaw.com/dc-court-of-appeals/1543809.html

So, it seems to me that any regulation or tax intended to limit the acquisition of ammunition would be just as Constitutional (or not) as if it applied to firearms themselves...