> well considering those types of weapons didn't exist and weren't even a possibility for another like 70 years
At the time the Second Amendment was ratified, private individuals could, and did, own field artillery pieces and fully-armed and -crewed ships of war.
When it comes to inducing a mass-casualty event, a 32-pounder full of grapeshot is going to beat the hell out of an AR-15.
Edit: an AR-15 bullet masses somewhere around 4 grams, depending, so a 32-pounder would fire roughly the equivalent of 3,500 AR-15 rounds in one shot.
>I should be able to have my own nuclear weapon for hunting
The Second Amendment has nothing to do with hunting.
> The second amendment makes no mention of it, thus I should get one.
I strongly suspect than anyone with the financial resources, technical infrastructure, and desire to own a nuclear weapon already has one, laws or no laws.