2025-03-2018051804 Mass. Acts. 111, ch. 81, An Act to Provide for the Proof of Fire Arms Manufactured Within this Commonwealth.https://dspace.d106.bravog.com/handle/123456789/1321--Requiring appointment of two per county for the inspection of barrels. Barrels required inspection under varying charges of powder and at varying degrees of elevation. Proven barrels are stamped post-inspection. Failed barrels fined thirty cents. Failed pistols fined twenty-five cents. Unproven barrels & pistols fined at ten dollars.enMANUFACTURE ONLYBook chapter