While a ban on high capacity magazines wouldn't mean that much on a practical level...politically, it would be a travesty. Let us hope that the would-be infringers truly learned their lessons from the last two dabacles, and stay well clear of 2A, because if they do this and get away with it, they'll be emboldened and they'll slip in and take another bite...and another, and another, and another.
If their memories are short, and they go ahead and do it...or even try it...use your vote to remind them that they swore an oath to uphold the Constitution. Remember their names come next election and throw the rascals out.