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A division of Canadian Industries Ltd. formed in late 1939 to produce munitions for the projected war effort. In 1941 they began to make high-quality boxer-primed .303 "Red Label"-type ammunition for use in aircraft machineguns. In 1942 they made the first Canadian government-manufactured 9×19mm Parabellum cartridges for Commonwealth forces.
Hallmarks on British sterling.Left to right: Crown signifying city of Sheffield, lion passant, Letter n of a style dating piece to 1905, and maker's insignia for Walker & Hall. 1680 maker's mark on base of a candlestick, for Robert Cooper, London
Injection speed is too fast, gate/sprue/runner size is too small, or the melt/mold temp is too low. Jetting: Jetting is a snake-like stream which occurs when polymer melt is pushed at a high velocity through restrictive areas. Poor tool design, gate position or runner. Injection speed set too high.