FIELD: production of sport-hunter weapons barrels rifled bores. SUBSTANCE: method allows to produce barrels rifled bores with changing width of rifles fields along barrel length and with less labour consumption due to bore working after reduction by mechanical tools. Method provides for radial reduction of hollow blank on conical profile mandrel. Then using mechanical tool of diameter equal to bore diameter blank is worked by fields in rear part of barrel. EFFECT: method allows to produce bore with changing rifles fields width an with less labour consumption. 4 dwg
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