In most states you can purchase black powder handguns without a permit, as well as ball, cap, and powder. The catch-22 is that while you may be able to legally posess the gun and all components, in NY atleast, you cannot shoot it without a Permit. Many Police agencies are not even clear on the laws governing BP. Check your local Gov. website, but for the time being err on the side of caution and assume you cannot.
Guns Have Only Two Enemies-Rust and Politicians
"The United States Constitution (c) 1791 - All Rights Reserved"
If Guns Kill, Do Pencils Mis-spell Words?
Pain is Weakness Leaving the Body - USMC
"Qui desiderat pacem, praeparet bellum"