Great Britain's missile is the Lee-Enfield, caliber 7.7 mm., the coating being cupro-nickel.

Russia uses Mossin-Nagant rifles, 7.62 mm., with bullets cupro-nickel coated.

The bullet has a sharp point, is composed of a lead core and a jacket of cupro nickel, and weighs 150 grains.

The fouling which results from firing is of two kindsone, the products of combustion of the powder; the other, cupro-nickel scraped off (under the abrading action of irregularities or grit in the bore).

(b) Powder fouling may be readily removed by scrubbing with hot soda solution, but this solution has no effect on the metal fouling of cupro-nickel.

It is merely a smear of infinitesimal thickness, easily removed by solvents of cupro-nickel.