FIELD: weapons and ammunition.
SUBSTANCE: method is based on reduction of friction forces during movement of a thrown body in a barrel. During firing, a pulse of acoustic oscillations of high capacity is sent to a barrel in direction of a vector of a maximum component of thrown body movement velocity, with duration T determined from the following ratio: T>L/V+dT, where L - barrel length; V - averaged muzzle velocity of a thrown body; dT - time to anticipate feeding a pulse, action of which stops after a body flies out of a barrel.
EFFECT: increased velocity of a thrown body, reduced wear of a barrel channel.
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