SU1723432A1 - Barrel for sporting plain-barrel gun - Google Patents

Description

The invention relates to weapons technology. The purpose of the invention is the provision

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effectiveness of firing in a round stand with a projectile fraction of reduced weight. The barrel of a sporting shotgun contains a chamber 1, channel 2 and a muzzle device. The latter includes an expansion chamber 3, a narrowing section 4 and a cylindrical muzzle section'5 with a safety bevel 6. In the process of firing, the shot projectile in chamber 3 is moved apart and, under the influence of Pea gases, is rearranged from the column along the diameter of the barrel 2 into a column close to the diameter of chamber 3 When moving along the constriction, the fraction of the fraction acquires a slightly conical shape with the concentration of the fraction towards the center. In section 5, the final formation of a shot shell occurs. 2 Il.

The invention relates to weapons technology.

Known muzzle device of the bore of a sporting rifle for a round stand, containing an expansion-mixing chamber, a constriction and an exit conical bore expanding in the direction of the shot.

The disadvantage of this device is the inability to ensure the regulated density of the Central zone of the flying shot projectile due to the lack of the necessary structural elements and the ratio of the size of the muzzle of the bore.

Known muzzle device of the bore of a sporting rifle, containing successively located an expansion chamber, a narrowing section and an expanding muzzle conical section, while the ratio of the length of the expansion chamber and the diameter of the tapered section of the narrowing section is equal to 4-5 cm.

The disadvantage of this device, designed to disperse the projectile fraction of standard mass with wrinkling in the center of the scree, is its inability to fire according to new international rules with a projectile fraction of reduced mass of 28 g instead of the previously used mass of 32 g. This device does not provide reliable, not less than three pellets, defeats flying targets, which is primarily due to the presence of a raz1723432 A1

1723432

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the expanding muzzle of the conical section (socket), the increased diameter of the narrowing and with the accepted ratio of sizes. As a result of using this design, the technical capabilities of the regulated hopping of the shot projectile trajectories at the adopted firing ranges are not created due to the decrease in the number of pellets in the trunk.

The purpose of the invention is to ensure the effectiveness of firing in a round stand with a projectile fraction of reduced mass due to the relative increase in the accuracy of shooting and the change in the nature of the dispersion of the fraction.

This goal is achieved due to the fact that in the barrel of a sporting shotgun containing a chamber, a smooth channel and a muzzle device, including a series expansion chamber, a conical narrowing section and a muzzle cylindrical section, the ratio of the diameter of the expansion chamber to the diameters of the channel and muzzle the cylindrical section, respectively, is equal to 1.1-1.18 and 1.05-1.15, the ratio of the length of the expansion chamber to the length of the muzzle of the cylindrical section is made 1.5-2, and the angle of the conic area of the narrowing is made equal to 3-5 °.

FIG. 1 shows the proposed trunk; in fig. 2 - muzzle device.

The barrel consists of a chamber 1 with a slug inlet of channel 2, caliber ά and a muzzle device, which includes an expansion chamber 3, a narrowing section 4 and a cylindrical muzzle section 5 with a safety bevel 6.

The ratio of the diameter L of the expansion chamber to the diameter ύ of the bore is set to 1.15.

The ratio of the diameter b to the diameter a of the muzzle of the cylindrical section is set to 1.1. The length C of the expansion chamber is installed 1.7 times the length C of the muzzle of the cylindrical section, and the angle of the forming surfaces

5 narrowing is assumed to be 3 °.

In the process of shot shot shot

in the chamber 3, having a diameter greater than the diameter of the channel, moves apart and under the influence of powder gases

10 is regrouped from a pillar in diameter ά into a pillar close to the diameter of b. In the course of further movement along a gentle narrowing, the 3 fraction of the fraction formed in the chamber acquires a weakly uniform shape with a concentration of grains towards the center.

In a cylindrical section 5 of length Ι2 and a diameter, both in diameter and length, a final shot of the shot projectile, which completely decreases in this area after leaving the restriction, occurs, which contributes to its concentration before flying out of the barrel bore, with a corresponding increase in accuracy of fire. . In this section 5 performs concentrating functions.

Claims (1)

Claim The barrel of a sporting smooth-bore shotgun containing a chamber, a smooth cousin and a muzzle device including successively an expansion chamber, a conical narrowing section and a cylindrical muzzle section, characterized in that 35 in order to ensure the effectiveness of firing in a round stand with a shot of a reduced mass, in it the ratio of the diameter of the expansion chamber to the diameters of the channel and the muzzle 40 of the cylindrical section, respectively, is equal to 1.1-1.18 and 1.05-1.15, the ratio of the length of the expansion chamber to the length of the muzzle of the cylindrical section is equal to 1.5-2, and the angle 45 conic section of the narrowing is made equal to 3-5 °. 3 one 1723432