You don't assume anything when confronted by armed attackers. They may beat you to death, force you to disclose where valuables are hidden at, and if you don't have enough, kill you because they thought you were holding out on them, or simply because you are a witness that can identify them in court.
Unless you agree to a fight with somebody, and are attacked, you have no idea what their motive is, so you take no chances. It's the same as getting attacked without a weapon. You always expect the worst.
The use of a deadly weapon is the same as not using a deadly weapon. Years ago when I was studying for my blackbelt, I asked my instructor what might happen to me legally if I used one of the five methods to kill another person? With that, he said since I have no idea what their intent is, use them. Because self-defense ends at the point you disabled your attacker from further attack no matter how you did it. Until that point, it's legally self-defense.
If people in my area start to get attacked by airplanes, then I'll look into anti-aircraft weaponry. But thus far, it's been criminals with guns, and yes......big magazines. So I don't think there should be any limit on magazine size because for one, it won't stop one shooting, and two, it won't make any difference in the amount of casualties or deaths. What it does do is advance the commie narrative of virtual gun and ammo confiscation.
Okay, if it won't make any difference on way or the other, what is wrong with placing a limit of 15 rounds for the mag? If the odds are overwhelming, withdraw. Tactical Withdrawal is a sound Military Tactic. And since you actually painted a Military Scenario then one would think using sound military tactics would be the best option.
You used that fact you earned a Black Best, Babyson. Here are some tips you missed.
When your enemy is hitting you here, don't be there
Control the Situation
Avoid the Confrontation if possible
Use only enough force to end the situation. That is part of controlling the situation. If you have no control over the situation then get away from the situation. The person that imparted that to me was a 3rd Don with enough awards and accolades to fill a wall in a decent sized living room.
Then there is Kelvinkis Rules from the New Centurian
If a bad guy picks up his hands, you pick up a knife
If a bad guy picks up a knife, you pick up a club
If a bad guy picks up a club, you pick up a gun
If a bad guy picks up a gun, you pick up your feet and get the hell out of dodge.
I suggest you get a copy of "The Art of War" by Sun Tzu. If you are going to prepare for war, II suggest you learn from the Brightest and the Best.
But if your home is in a potential war zone then use your Martial Arts training and remove yourself and you family from a situation you really have no control over.