Fourth Class.—Comprising every description of double-barrelled birding and fowling-pieces for firing small shot.
Fifth Class.—Comprising revolving and breech-loading small arms of every description and system.
Rule of Proof.
The gunpowder used for proof shall be of equal quality and strength with that which is now used by the Honourable Board of Ordnance.
The balls used for the proof of barrels of all classes shall be of lead, and spherical, and of the size and weight prescribed by the scale for proof.
Barrels for arms of the second class and of the fourth class, and for breech-loading arms of the fifth class, shall be proved provisionally and definitively, and barrels for all other arms shall be proved once definitively.
Conditions precedent to Proof.
Barrels for arms of the first class shall not be qualified for proof until they shall be in a fit and proper state for setting up.
Barrels for arms of the third class shall not be qualified for proof until they shall be in a fit and proper state for setting up, with the proper breeches in; and all barrels lumped for percussioning shall be proved through the nipple hole, with the proper pins or plugs in.