[I]t shall be unlawful for any person or persons to buy or sell or give away any pistol cartridges in this state. . . [A]ny person or persons violating this Act, shall be guilty of a misdemeanor, and on conviction thereof shall be fined not less than twenty-five or more than one hundred dollars. . . [P]rovided, however, that nothing in this act shall be construed to interfere with the sale of cartridges for rifle guns or shot guns, or cartridges for army or navy pistols.