Charge, Q.F. 2 Pr, Mk I & III Guns, 3 oz 124 gr, Cordite, Size 7½. Mk III. Jul 1917, §18797. Approved Oct 1915. This Mk III charge was 3 oz 124 gr cordite, size 7½, it consisted of a cylindrical core of 4.5 inch cordite sticks tied in the centre with silk sewing, with an outer ring of 5.0 inch cordite sticks tied in two places with silk sewing. A recess was formed in the base of the charge to fit over the plain portion of the percussion primer. For L.S., cotton sewing was used as an alternative for tying the charge.