Randy,
I am a class 3 dealer in Nebraska. If you need the name of a class 3 in ohio I can find you some. If you are not a ffl or c&r licensee, the sbs would have to be transfered through a class 3 dealer(unless it is in your state)If you have a c&r license and the firearm you are wanting is also a c&r then the firearm can transfer directly to you from out of state with no class 3 dealer involved. If you find a sbs in your state it could transfer to you directly without a c&r or class 3 dealer.

There will be a tax on the transfer from an individual to a class 3, then from the class 3 to you(two taxes). If the sbs is in a class 3 dealers inventory then there would be only one transfer tax to you.

The forms are downloadable online. I will check tomorrow and make sure ohio is a nfa state. Some states dont allow machine guns, some dont allow sbs (short barreled shotguns).
Its kind of a hassle but kind of fun too.
Ross