You guy are not reading the laws right. Under the Gun Control Act of i968, any fire arm made before 1899 is an antique,regardless of what ammunition it is chambered for. Replicas made after 1898 and chambered for obsolete rounds such as .44 Henry rimfire or .52 Spencer rimfire are also not considered to be firearms under the 1968 Act. Muzzle loaders, regardless of when made and regardless of the ignition type are not considered firearms. The National Firearms Act of 1934 is the controlling law for full automatic weapons, short barrel rifles and short barrel shotguns, not the GCA'68. Thus a Colt M1895 machine gun falls under the requirements of the NFA of '34, and cannot be owned or traded without paying the transfer tax, but a Gatling gun operated by a crank falls under the GCA '68 and can be freely owned even though it might fire more rounds per minute than the Colt. The above statements apply only to Federal law, and some states may have laws that differ.