RU2615584C1 - Small arms hunting cartridge - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: cartridge consists of a case with a cap primer fixed in the cap bottom, a missile charge and a naked bullet. In the bullet head, a cruciform recess is formed by the intersection in the plane perpendicular to the bullet longitudinal axis of two wedge slots 90° to each other, and the bullet longitudinal axis coincides with the intersection line of symmetry planes of the wedge slot surfaces. In this case, the cruciform recess is designed with depth (0.18-0.27) d, where d is the cartridge caliber, and the angle between the opposite walls of each wedge slot is 45-55°.

EFFECT: fire pin-point accuracy, simplified geometry process of easily deformed bullet head, and bullet integrity maintainance in soft tissues, thereby increasing hunting effectiveness.

2 dwg

Description

The invention relates to hunting cartridges for small arms, in particular, a caliber of 5.6 mm annular ignition with bullets having the structural possibility of increased deformation when hit in an obstacle.

Cartridges are known with increased deformability of the bullet head parts, which have blind axisymmetric cavities in them, the walls of which rotate outward under the wedging effect of the soft tissues of the animal, which leads to an increase in the diameter of the bullet and, accordingly, the wound canal (RU 2094743, IPC F42B 5/02, publ. 10/27/1997; RU2172922, IPC F42B 5/02, publ. 08/27/2001).

Known cartridges have a complex technology for the formation of a blind axisymmetric cavity in the head of the bullet and, due to the significant size of the cavities, the reduced weight of the bullets and the low accuracy of fire.

Known cartridge (RU 2009444, IPC F42B 5/02, publ. 03/15/1994) containing a sleeve with an igniter capsule, a propelling charge and a deformable (expansive) shellless bullet, in the head of which there is a blind axial hole with a depth of (1.0-1.5) d in the form of a cylinder with a diameter of (0.3-0.45) d, turning into a cone, tapering to the base to a diameter of (0.09-0.18) d, where d is the caliber of the bullet.

The cartridge according to patent No. 2009444 is selected as a prototype.

The disadvantages of this cartridge are:

- the difficulty of stamping a blind axisymmetric cavity in the bullet head, requiring the use of several punches;

- reduction in bullet weight by 7.6%, and therefore, its kinetic energy;

- deterioration in the accuracy of fire due to a change in the position of the center of mass and an increase in dynamic imbalance due to misalignment of the surfaces of the blind cavity and the outer surface of the bullet.

The objective of the invention is to increase the effectiveness of hunting cartridge while simplifying its manufacture.

Achievable technical result is an increase in the stopping action of the cartridge, while ensuring high accuracy of the battle and the exclusion of the destruction of the bullet in the soft tissues of the animal.

This result is achieved by the fact that in a cartridge containing a cartridge case with an igniter capsule, a propellant charge and an envelopeless bullet, a cruciform recess is formed in the bullet head formed by the intersection in the plane perpendicular to the longitudinal axis of the bullet of two wedge-shaped grooves at an angle of 90 ° to each other, and the longitudinal axis of the bullet coincides with the line of intersection of the planes of symmetry of the wedge-shaped surfaces of the grooves, while the cross-shaped recess is made with a depth of (0.18-0.27) d, where d is the caliber of the cartridge, and the angle between GOVERNMENTAL walls of each groove is a wedge-shaped (45-55) °.

The invention is illustrated by drawings, where:

in FIG. 1 shows a longitudinal section of a cartridge;

in FIG. 2 is a top view of the bullet head.

The cartridge consists of a sleeve 1 with a primer 2, mounted in the bottom of the sleeve, propelling charge 3 and shellless bullet 4.

A cross-shaped recess 5 is made in the head part of the bullet 4, the depth of the recess being (0.18-0.27) d, where d is the caliber of the cartridge, and the angle between the opposite walls of the recess is (45-55) °.

These essential features are interrelated. Changing any of them affects the implementation of the task of the invention.

The claimed parameters are optimal for solving the task.

A decrease in the angle of the solution of the wedge-shaped grooves of less than 45 ° leads to an increase in the time of opening the walls of the cruciform recess and to a decrease in the initial impact of the bullet causing pain shock, since part of the kinetic energy of the bullet will be spent on its deeper penetration into the soft tissues of the animal, which leads to reducing the stopping effect of the bullet.

An increase in the angle of the solution of the wedge-shaped grooves above 55 ° leads to a decrease in the mass of the warhead, which negatively affects the accuracy of the ammunition battle and reduces the magnitude of the opening of the warhead of the bullet, which also reduces the stopping effect of the bullet.

Reducing the depth of the wedge-shaped grooves of less than 0.18d reduces the magnitude of the opening of the head of the bullet and, therefore, its stopping effect.

An increase in the depth of the wedge-shaped grooves of more than 0.27d will entail a decrease in the mass of the bullet head, which reduces the accuracy of the cartridges and violates the optimal ratio between the accuracy of the cartridges and their stopping effect.

The cartridge operates as follows.

When the gate striker strikes the edge of the sleeve flange, the igniter capsule 2 fires, igniting the powder charge 3. The gases generated during the combustion of the powder charge 3 push the bullet 4 out of the barrel bore. When the walls of the cruciform recess enter the soft tissues of the animal, they immediately begin to unfold, unlike bullets with deep cavities, thereby maximizing the transfer of kinetic energy to the soft tissues, providing the maximum damaging effect at the initial moment the bullet enters the body of the animal, minimizing the loss of kinetic energy on the expansive effect , which increases the lethal effect of the bullet and the effectiveness of hunting. In this case, the bullet is not destroyed in the soft tissues, which facilitates its extraction. Thanks to this design, the easy deformability of the bullet head is combined with a high accuracy of fire, which significantly increases the hunting productivity (effectiveness).

The present invention is used in the design of a hunting 5.6 mm cartridge.

Claims (1)

A small arms hunting cartridge containing a cartridge case with an igniter capsule, a propelling charge and a shellless bullet with a recess in the head, characterized in that the recess is made in the form of a cross-shaped recess formed by the intersection in the plane perpendicular to the longitudinal axis of the bullet of two wedge-shaped grooves at an angle of 90 ° to each other, and the longitudinal axis of the bullet coincides with the line of intersection of the planes of symmetry of the wedge-shaped surfaces of the grooves, while the cross-shaped recess is made with a depth of (0.18-0.27) d, where d is caliber on, and the angle between the opposite walls of each wedge groove is 45-55 °.

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