Then go hop into your time machine and convince the Miller court. It means diddley squat to me.
Why, I was just trying to apply the "Miller" test, and to provide the evidence that the Court said was lacking.
Bottom line, "Miller" did not really uphold the NFA WRT shotguns, but rather overruled the process the lower court used to declare the law in violation of the Second Amendment, which isn't quite the same thing, although the effect is that the law still stands, pending another Supreme Court ruling on the subject, which there hasn't yet been these past 68 years or so.