Hey cmburns,
“Were there state or federal laws regulating the private ownership of any type of armaments in early American history?”
My knowledge is limited mostly to early Georgia, but I do know that at the onset of hostilities in January of 1776, the Georgia Council of Safety ordered that powder and guns belonging to slaves were to be confiscated, allowing only one musket per overseer, with 13 cartridges. This appears to have been limited to the plantations around Savannah. There is no record of any confiscation of any weapons belonging to citizens of the state, and according to the Militia Law of 1778, each person liable to serve in the militia had to supply his own weapon, ball, and powder.
“If a private citizen wanted to have a cannon loaded with grapeshot on his front lawn, was this in any way illegal?”
I don’t think it ever occurred to anyone at the time to try to regulate this, since it would be illogical for a settler to have his own personal cannon. Cannon were expensive, not available in large quantities from the local cannon store since they came from European foundries, and had to be served by a crew and drawn by horses. (Discounting things like small wall guns or swivel guns) Individual use of a cannon as your primary weapon would have been silly. Artillery without a protecting force is pretty much useless.
Gentlemen of means could afford to buy cannon as part of raising their own volunteer artillery companies, or as protection for fortified settlements out in the frontier, but no one just went out and bought them just ‘cause they could; so I believe the idea of legislating against such things just wouldn’t have made sense. Powder and shot were available in bulk quantities, so if someone wanted to go blow places to kingdom-come, they could have. This wasn’t high on most folks agenda, though. At the time, Georgia was relatively poor and had no established military force, and the problem was not on eliminating guns and powder, it was on scrounging enough to field an effective fighting force.
Other states may have passed such laws about heavy armaments , but my knowledge is Georgia, and I have seen nothing to indicate that any sort of these armaments were ever outlawed for use by private citizens. The impediments to their ownership by individuals would have been matters of cost, availability, and utility. If anyone has a cite for such a law in revolutionary Georgia, please email me so I can add it to our material.
(For what it’s worth, muzzle loading black powder cannons are legal for people to own today, subject to local regulation. Our unit commander keeps his in the garage, though, not in his front yard.)
Hope you get some more answers!