FIELD: weapons and ammunition.
SUBSTANCE: proposed method comprises barrel boring and reaming. Then, barrel bore is subjected to mandrelling. Gun barrel is subjected to annealing with heating to 0.9-0.95 of α to γ phase transition temperature at the rate not higher than 10-15°C a minute and to finishing mandrelling. Holding in heat treatment makes 85-95 minutes while cooling is performed at the rate not over 15°C a minute.
EFFECT: higher accuracy of hits and reliability.
2 cl
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