I am glad someone brought that up. There is a myth that antiques and repros are not considered firearms so it is OK to carry one regardless of state permit laws. Not true. Many states do exempt them from restrictions on purchase or possession, but I know of no state law that exempts antiques or repros from criminal law restrictions on carrying, concealing or transporting a handgun.
As far as areas like armed robbery, assault with a deadly weapon, etc., it doesn't matter how a gun is loaded, it is a firearm and a deadly weapon.