You can’t have too much ammo. You can always shoot it, sell it, or trade it. Or save it for a rainy day.
My take:
Even the most conservative Justices (Thomas excepted, for obvious reasons) seem to have left a lot of cover for existing restrictions on military arms. Counterintuitively, they seem to say it's important to protect the right of the individual to show up armed for militia muster as long as they don't do it with anything more powerful than what's commonly available to the average civilian. And, by the way, machine guns (or anything else we decide isn't OK) aren't commonly available since the law makers say they can't be.
Greaaatttt.
God, PLEASE Save the Constitution.