Coxe was the Pennsylvania delegate to the Continental Congress. The Continental Congress was the governing body of the fledgling United States during the Revolutionary war through the Articles of Confederation, through the Constitutional Convention, and right up to the point the Constitution was ratified. Coxe, like Hamilton, was a federalist.
He was as much a founder as Hamilton was. Being on the Constitutional Convention is not a prerequisite for being a founder. Either you are ignorant, or a liar. Take your pick.
As for explicit mentions, they did not mention muskets either. Does that mean we cannot own rifles? They did not mention ANY firearms by specific name nor type. They simply named ARMS. Cannons clearly fall under the category of arms of that time.
Your arguments are specious and full of ignorance opf history. The founders INCLUDING COXE clearly indented the people to be as well armed as a standing army. It does not MATTER how much weapons technology has advanced - if it is carried by the common army infantry, it should be available to the people. Otherwise government has a monopoly on military power, and that is a threat to liberty. That includes Predators with full complement, if the person can afford it. And M1 Abrahms tanks. And D2 howitzers. And 106 recoiless rifles. Etc. etc. etc.
Nucs is a boogie - a typical brain dead liberal pull-it-out-of-your-ass piece of ignorance.
And you still have not come up with ONE actual reason law abiding citizens should not have full auto weapons (or anything else) - just a lot of liberal fear mongering bullshit. Your entire argument has been based on lies about what the founders meant when they wrote the 2nd Amendment and nothing about why a liberty needs to be curbed due to your own fears and mistrust.
BTW: ever seen what a 10 pounder full of grape shot can do to a group of soldiers at 200 yards? It can be VERY "effective at mass murder." - just a bit difficult to haul around.