Provided always, that, except as is by this Act otherwise expressly provided, such Repeal, or this Act, or anything contained in this Act, shall not take away, lessen, alter, or prejudice any of the Estates, Franchises, Ordinances, Rules, Regulations, Rights, Powers, or Privileges of the Gunmakers Company, and this Act or anything therein shall not in any Manner derogate from or affect the Charter of the same Company.