| 摘要 |
A smooth bore rifle barrel (10) comprising an initial portion or cartridge chamber (11), an intermediate portion or bore (12), a final portion, composed of a muzzle section (15, 16) and a terminal portion (13, 14) with a fixed choke or built in a manner to provide a series of interchangeable chokes. The muzzle section (15, 16) is provided with a conical fitting (15) connected to a portion (16) of the barrel (10) of a cylindrical shape, so as to attain, at a predetermined ratio between the lengths and diameters of the conical fitting (15) and of the cylindrical portion (16), a reduction of the recoiling force with respect to that of known rifle barrels, without changing the exit velocity and spreading angle of the gunshot.
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