The shell is fired from the 10.5 cm l.F.H. 18 (gun howitzer) with a separate laoding Q.F. cartridge.

The shell is painted black, has a filled weight of approximately 31.25 lb. and, including the tracer, which protrudes half an inch from the base has an overall length of 11.5 inch. There is no marking to indicate the presence of the tracer.

The shell, weighing 22.25 lb empty, is machined from rolled bar chronium molybdenum steel and has a hardned head. The hardness figure varies from 675 at the point to 308 at the shoulder.

The driving band is of the iron copper-clad type. Two cannelures are formed behind the hand.

The weight and method of filling are the same as described for the 10.5 cm A.P.C.B.C. shell in this pamphlet.

The fuze is the same as that described for the 7.5 cm shell in Pamphlet No. 4, page 26 and Fig. 16, but has a larger body.

Details of tracers used with this type of fuze are given in the section on tracers in this pamphlet.