In compliance with the Italian law for the guns production and sale, all the guns must go through the firing tests at the Banco Nazionale di Prova (National Proof House) in Gardone Valtrompia according to the C.I.P rules. The high pressure firing test is made to all the guns whether they are muzzle loading or breech loading, and it is one of the most sophisticated of qualifications tests, involving not only actual overload firing tests but also over 40 inspections for dimensional changes which would indicate the slightest flaw.