This isn't exactly a question...so there is no way to answer it without know what you are asking about a black powder hand gun.
Yes they exist, a flint lock pistol is an example of one, and they are very fun to shoot.
Black Powder.
were do you live in KY yes long as it a side arm.
10-1000 USD or more depending on specifics.
To the best of my knowledge unless you are a convicted felon you can own a black powder gun.
Yes, a black powder gun is considered a firearm under federal law.
in new mint condition about 250 dollars
Chinese
I imagine state laws vary on this but in Texas you do not have to call anybody to transfer a black powder gun.
no rockets run on black powder (gun powder)
who made the gun. how do you know it's a black powder gun ????
Spain
Charcoal and saltpeter (if you mean black powder)