CN1551972A - Armor piercing bullet and manufacturing method thereof - Google Patents

Abstract

The cartridge comprises a shell (13) with a powder charge (16) and a bullet (1), wherein the bullet (1) comprises a body (2) with a rear base (6) and a peripheral wall, along the axis of which a piercing core (3) is fixed. At least one of the front part (5) of the body (2) of the bullet (1) and the rear part (17) of larger diameter corresponding to the caliber of the barrel for stabilizing and guiding the bullet (1) in the barrel is adapted to control the separation in the weakened zone of its peripheral wall. The piercing core (3) is arranged in an opening (19) in front of the body (2) with radial tolerance. Between the front part (5) and the rear part (17) of the bullet (1), the body (2) has a deformation wall (10) of reduced thickness, whereby its contact area with the shouldered rear part (17) forms a tear zone in the front part of the body (2), while the front end (8) of the piercing core (3) is pointed and the space between this front end of the core (3) and the adjacent part of the inner wall of the opening (19) of the body (2) is filled with a malleable plug (4), the outer surface of which constitutes at least the major part of the impact surface (20) of the bullet (1). The invention also relates to a method for the pre-setting of at least one radial cut in the body (2) of a bullet (1) of a bullet cartridge, wherein the rear part (17) of the body (2) is shaped with a larger diameter and has at least one radial cut (12) of trapezoidal cross section which is symmetrical on one side, characterized in that the body (2) protrudes to a desired smaller caliber through a stepwise narrow opening in a calibration piece, whereby the material of the body (2) in the area of the radial cut becomes inhomogeneous and deformed, whereby the front part of the radial cut (12) straightens in the protruding direction up to right angles to the axis of the body (2) and the material density in this area increases and its rear part is more spread out and the material density in this area decreases.

Description

Armor-piercing projectile and its manufacturing method

technical field

The present invention relates to a cartridge assembly with armor-piercing projectiles having enhanced penetration effectiveness against body armor and other ballistic shields, especially hard barriers such as armored vehicles, special glass and the like.

Background technique

Known for use in pistols, rifles, machine guns, etc. are burst ammunition in which the body or casing of the bullet explodes to a larger diameter upon attacking the barrier, thus producing a stronger effect on the barrier. This effect is influenced to a considerable extent by the speed of the bullet and the resistance of the barrier to the impact of the bullet. Arranging the front of the bullet in such a way as to obtain controlled expansion so that the blast of the body when the bullet impacts the barrier is more forced and at a lower velocity. The bullet body can be pre-provided with external transverse or longitudinal peripheral cuts (PCT application WO 00/79211, US patent 6,148,731, Czech patent 289,744) or internal longitudinal cuts (US patent 3,881,421), which facilitate the receiving of the bullet body. controlled detonation; for this purpose also flash caps with peripheral projections are used which on impact are forced rearwardly into openings in the bullet (US Patent 4,685,397, PCT Application WO00/79211) through which the body of the bullet protrudes Parts exploded inside. In the above-mentioned PCT application WO 00/79211, a bullet showing controlled expansion is described in particular, where an opening is drilled into the body from the front, in which is securely seated a bullet made of a harder, more solid material. For example, a bullet core made of iron. This scheme is offered against shotguns and is used for less rigid targets. The core is released from the bullet when the body of the bullet explodes. its purpose is to facilitate the controlled blasting of the body over the target so that the body does not break into further fragments, its enlarged front surface transfers a major part of its energy to the target, but does not damage or destroy it target (prey). In certain cases, this can be achieved by means of outer radial grooves and inner longitudinal grooves. None of these solutions achieve the goal of penetrating hard barriers, nor do they take into account unfavorable impact angles.

Contents of the invention

The above objects can be achieved by a solution according to the proposed invention, which applies several known features mentioned above, but in a new combination with additional features. The solution comprises a cartridge case consisting of a cartridge case with powder filling and a cartridge, wherein the cartridge comprises a body with a rear base and a peripheral wall, along its axis an armor-piercing core is fixed. The basic principle of the invention is that at least one frontal portion of the body, in the weakened area of its peripheral wall, is adapted to control separation after the bullet has impacted the barrier.

On the impact of a bullet on a hard barrier such as a steel plate or a glass or a ceramic plate, the armor-piercing core of the bullet is embedded in the barrier, and at the same time the peripheral wall of the front of the body explodes suddenly, and it bursts open in the weakened area to expose the armor-piercing core, and due to the The inertial mass of the rear greatly increases the further penetration depth in the hard barrier. So only the hard, sharp core is embedded in the barrier.

The body of the bullet includes a guiding front and a larger diameter rear for stabilizing and guiding the bullet within the barrel. The diameter of the rear corresponds to the caliber of the gun. The armor-piercing core is placed in the opening in the front of the body with a radial tolerance. Between the front and the rear of the bullet, the body has a deformed wall of reduced thickness, whereby its contact zone with the rear of the shoulder forms the tear zone of the front of the body. The front end of the armor-piercing core is tapered and the space between this front end of the core and the adjacent portion of the inner wall of the body opening is filled with a malleable plug, the outer surface of which constitutes at least the majority of the impact surface of the bullet.

On the impact of a bullet against a hard barrier, the soft material of the plug can immediately fix the bullet at the point of contact with the barrier, and the impact angle of the bullet will not change. The sharp point is inserted into the barrier, preventing it from deflecting, bouncing or splitting. Once the point penetrates the barrier, the material of the plug is transferred along the tapered face of the point of the armor-piercing projectile, the weakened deformed wall of the body expands outward, and then the entire front of the body falls off and crumbles. Its shattered fragments scatter in all directions along the surface of the hard barrier, but, even when fired at close range, the shooter is not impacted or endangered by the fragmentation. Only the sharp core of the bullet penetrates the hard barrier, partly through its own inertia and partly through the inertia of the rear of the bullet to enhance the penetration of the core. Armor-piercing cores are made of materials of high strength, hardness and quality such as iron, tungsten or sintered metal carbide.

The deforming wall may be formed by the bottom of a rectangular slot arranged radially in the body, the rear wall of which is also the front surface of the shouldered rear forming the first impact surface. The length and depth of the rectangular slots are determined by the type and strength of the material used in the body to ensure operational reliability so that the weakened portion of the body does not deform when a bullet is pushed into the case and during normal operation of the cartridge. When the whole front part of the projectile hits the hard barrier and separates and breaks up, the rear wall of the rectangular groove forms the first impact surface of the projectile on the barrier.

The front of the body preferably tapers to a circular shape in the direction of exit from the opening, so that the impact surface of the bullet forms a flexible plug, and the sharp point of the conical front end of the core sinks into this contact surface. This rounded front is used to guide the cartridges from the magazine into the chamber of the gun. Tough plugs made, for example, of lead or plastic reduce the dynamic deformation strength of the front of the body. When it hits a hard barrier it acts like a fluid in the enclosed space, immobilizing the bullet at the point of contact with the barrier as described above, and subsequently causing the weakened body of the bullet to expand outward and The region of the rear wall at the bottom of the rectangular trough (which at the same time constitutes the front surface of the rear part of the shoulder) falls off.

It is convenient for at least one other part of the body to be separated step by step in the direction from the front wall of the bullet in the region of the radial cutout in the rear peripheral wall. The body may have at least one radial cutout on its rear outer periphery.

In an alternative embodiment, the rear outer periphery of the body may have at least one helical cut, or evenly spaced radial cuts.

In another embodiment, two radial slits of trapezoidal cross-section may be spaced apart from each other along the axial direction of the narrow cross-section at the rear of the body. The front wall of each notch is at right angles to the axis of the bullet, while the rear walls are respectively the second and third impact surface portions.

When the core of the bullet penetrates the hard barrier to the rear of the body that touches the barrier, the parts of the body divided from each other by the radial cuts undergo a controlled and rapid disintegration, which easily leaves the rest of the body and during its disintegration The remainder is always close to the front (in the direction of the bullet's travel). This is conducive to the further gradual and controlled decomposition of the projectile body, thereby avoiding unnecessary energy loss during the process of penetrating the projectile core into the hard material barrier. The hole in the barrier material to be shot is substantially cylindrical and its outer diameter always corresponds to the outer diameter of the fired core. An impression is formed on the front of the pierced barrier due to the controlled disintegration of the body. In barriers made of soft materials such as mild steel, the prints will be larger, while in hard materials (such as steel plates used in armored vehicles, walls, etc.), the prints will be barely noticeable. On impact against a hard barrier, an AP projectile immediately behaves like a small caliber bullet, with greater firing capability due to the fact that only the core, rather than the body, is embedded in the barrier.

The interior space of the case at the bottom of the body near its surface is preferably filled with a compressed ammunition charge. This allows the armor-piercing projectile to have a high muzzle velocity, which is achieved by a combination of the low mass of the bullet and the special formulation and filling of the case by ammunition. A quantity of ammunition is first placed into the case or clip and compressed with a certain pressure (forming a projectile with the internal dimensions of the case). Alternatively, a pre-compressed projectile sized to conform to the shape of the case can be inserted into the case. In this way a substantial amount of energy is supplied to the cartridge, which, when ignited by the fuse, is released throughout the passage of the bullet through the barrel without dangerously exceeding the maximum allowable pressure within the cartridge. The substantially longer pressurization phase required during the combustion of the charge of the ammunition and throughout the acceleration of the bullet inside the barrel thus produces a completely different bending. The pressure at the muzzle is therefore increased compared to normal ammunition, for example in a 9mm Luger cartridge (a pistol commonly used by police and special forces) which increases exponentially. In a shotgun cartridge, almost three times the velocity and energy of normal ammunition would not be produced without the compression of the ammunition. Also, for a lightweight bullet weighing, for example, 2.9 grams, this method of formulating and filling the cartridge ensures the general functionality of the gun (pistol and automatic weapon) for repeatability, self-filling, etc.

Another essential feature of the invention is the method of presetting at least one radial slit in the body of a cartridge according to any of the above-described embodiments, wherein the rear portion of the body is shaped with a larger diameter and has at least one edge Radial slit of symmetrical trapezoidal cross-section, the body subsequently protrudes to the required smaller caliber through stepped narrow openings in a calibrating element, whereby the body material becomes inhomogeneous and deformed in the area of the radial slit , so that the front part of the radial cut straightens in the direction of protrusion until it is at right angles to the axis of the body, while the material density in this area increases, and its rear part is more spread out, while the material density in this area decreases. This arrangement allows for controlled and progressive deformation of the rear portion of the projectile after it hits the barrier. The inhomogeneity of the body material results in a reduction in the dynamic strength of the body on at least one impact surface, so that after separation it has a truncated cone shape, narrowing in the direction of the front of the bullet. The body of the bullet therefore does not penetrate the material of the barrier.

Another advantage of a cartridge with a cartridge according to the invention is that it can be determined and recognized immediately from ordinary ammunition by its shape and by its unique perception in unfavorable visual conditions such as at night.

Description of drawings

The invention will be explained in greater detail in the examples with reference to the drawings and the detailed description that follows. Figure 1 is a schematic view along the longitudinal section of an example of a projectile structure with radially outer cutouts and an inserted hard core, and Figure 2 is an image of a possible embodiment of an armor-piercing projectile, in which not only can one see that the projectile body is made of brass The shape and structure of the finished bullet, and the lead plug formed in front of the bullet can be seen. Figure 3 shows an embodiment similar to the bullet in Figure 2, in this case the body of the bullet is made of light metal elements, with the possibility of color difference, which facilitates the initial determination and identification. Figure 4 shows the bullet after hitting the target. Figure 4A involves a soft material such as a biological organism, a soft slurry such as clay, etc.; B involves a target made of a harder material, such as wood or plywood ; C is a soft metal such as 11321 steel and D is a hard metal, ceramic or glass. Depending on the hardness of the target barrier, a progressively controlled deformation of the body can be seen. The body of the bullet penetrates the target material only in cases A and B; in cases C and D it grazes the barrier and only the armor-piercing core penetrates, leaving the remainder of the body in fragments, which is shown in Figure 5. Figure 6 shows a side view of a given 30mm laminated laminated glass as used to protect bank operations. In FIG. 7 the glass shown in FIG. 6 is pierced by an armor-piercing projectile according to the invention. Figure 8 shows a bullet hole in the hard material of a 5 mm thick HARDOX type steel plate viewed from the bullet entry side. Here the impression of the bullet is minimal. Figure 9 shows the opposite side to Figure 8, from which the bullet exits. Figure 10 shows a bullet hole in the soft material of a 11375 steel plate of a given 10mm strength as viewed from the bullet entry side, where the imprint of the bullet body is evident. Figure 11 shows the opposite side of the bullet exit from Figure 10.

Detailed ways

The armor-piercing projectile 1 comprises a cylindrical body 2 usually made of brass, light metal elements, plastics, etc., which is placed with clearance and in a predetermined position inside a case 13 having a corresponding size. The body 2 is inseparably attached to the casing 13 in a conventional manner, usually rolled or coated. During the production of body 2 its initial outer reference diameter is larger than when completed. At its rear (relative to the direction of movement of the cartridge 1 after being fired from the gun), preferably inside the cartridge case 13, the outer surface of the body 12 is provided with radial or helical cuts (usually one to three cuts). ). The cutouts 12 are spaced apart from each other by the guide surfaces of the cylindrical part of the body 2 of the cartridge 1 for guiding the cartridge 1 in the bore of the barrel for its rotation in the barrel. The cutouts 12 can be produced by various methods, such as cutting, rolling, extrusion, injection casting in the case of plastics, etc. They are generally trapezoidal, narrowing in the direction of the axis of the body 2 of the bullet 1 . The depth of the notch 12 is determined by the material used for the body 2 of the bullet 1 and the required destructive force of the body 2 after hitting the target. The bullet should thus obtain the final dimension of the diameter of the body 2, calibrated after the bullet has been fired from the gun by pushing it out through a segmented alignment in the direction of movement (trajectory) of the bullet 1. The shape of the cutout 12 changes during this operation. The material of the body 2 of the bullet 1 is deformed in the region of the guide ring formed by the cut. At the front of the ring, relative to its alignment, the material of the body 2 is pressed backwards creating an inhomogeneous structure. The original slopes at the rear of the guide ring straighten until they form a right angle with respect to the axis of the body 2 , the material density increasing in the bottom region of the cutout 12 . Conversely, at the front of the guide ring, the material density decreases and the angle of its inclined surfaces increases. This modification allows controlled and gradual deformation of the rear portion of the body 2 after impacting the barrier.

After the front portion of the bullet 1 was inserted into the chamber of the gun barrel, the outer diameter of the bullet body 2 was reduced before the opening of the cartridge case 13 with a certain distance. In the direction of the front of the bullet 1, the body 2 is further lightened by deformation grooves 10 formed therein. The length and depth of the deformation groove 10 are determined by the type and strength of the material used in the body 2 to ensure the handling strength of the bullet 1 . That is to ensure that the weakened portion of the body 2 does not deform when the bullet 1 is pushed (in preparation and filling) into the casing 13 and during normal handling of the bullet 1 and cartridge.

Attached to the deforming groove 10 in the forward direction is the rounded front or head 5 of the bullet 1, which conforms to this bullet and serves to guide the cartridge from the magazine or into the chamber of the gun by the force of the breech of the gun . Even during this operation, casing deformation (misalignment, off-centre) of the body 2 does not occur in the area of the deformation groove 10 . From the front side of the body 2 of the bullet 1, a central opening 7 of circular cross-section is arranged along its axis, and a core 3 made of a material of high strength, hardness and quality such as iron, hardened steel, tungsten or sintered metal carbide Insert it. The front of the core 3 ends at a point 8, which may be conical with an acute vertex. The conical housing may be flat, round or substantially any rotational shape suitable for the particular purpose of the material and cartridge application.

The free space between the point 8 and the inner wall of the bullet 5 is filled with a plug 4 of a soft material such as lead or plastic. Its purpose is to reduce the dynamic deformation strength of the bullet 1 front. After hitting the barrier, it behaves like a fluid in a closed space, moving in all directions. When the bullet 1 hits the target obliquely, the bullet head 5 of the bullet 1 will deflect and the bullet body 2 will gradually deform in the area of the deformation groove 10 . The soft material of the plug 4 allows the immediate fixation of the bullet 1 at the point of contact with the barrier without changing the angle of impact of the bullet 1 . During this process, the sharp point 8 of the core 3 of the bullet 1 penetrates the barrier, preventing it from grazing, rebounding or splitting. Once the sharp point 8 penetrates the barrier, the material of the plug 4 is transferred along the conical surface of the point 8, the weakened body 2 of the bullet 1 in the area of the deformation groove 10 expands outwards, and then the entire front part of the body 2 falls off and shatters crack. Therefore, the core 2 part is exposed.

If the barrier is made of a hard material such as steel, glass, ceramic plates, then the dislodged debris will graze and spread in all directions along its surface. This is especially noticeable when shooting at close ranges such as 1 to 2 meters. The person shooting is in no way impacted or in danger by the fragments. Only the hard core 3 of the bullet 1 is pushed (penetrated) into the barrier of hard material, partly by its own inertia and partly by the inertia of the rear of the bullet 1, which is passed by the body 2 of the bullet 1 Bottom 6 has increased the penetration of bullet core 3 by relying on its inertial mass. When the projectile core 3 penetrates the hard barrier to the rear of the projectile body 2 and touches the barrier, the various parts of the projectile body 2 undergo controlled decomposition, such as step by step along the various guide rings made during the manufacturing (calibration) process, thereby They leave easily the rest of the body 2 and during its disintegration the remainder of the body 2 is always immediately in front (in the direction of movement of the bullet 1 ). This is beneficial to further gradual and controllable decomposition of the projectile body 2, thereby avoiding unnecessary loss of energy during the process of projectile core 3 penetrating the hard material barrier. The outer diameter of the hole of the shot through barrier material is substantially cylindrical and always coincides with the outer diameter of the fired core 3 . In the front of the penetrated barrier, an impression is formed due to the controlled decomposition of the body 2 of the bullet 1 . In barriers made of soft materials, such as mild steel, the prints will be larger, while in barriers of hard materials (eg HARDOX type steel plates for armored vehicles, walls, etc.) the prints will be barely noticeable. On the impact of a hard barrier, the armor-piercing projectile 1 immediately behaves like a small-caliber bullet, because only the projectile core 3 rather than the projectile body 2 of the bullet 1 penetrates the barrier, thereby having a stronger shooting capability. However, when the armor-piercing bullet 1 hits a target such as wood, it behaves like a normal conventional bullet and does not disintegrate at all. In this case the hole corresponds to the diameter of the body 2 of the bullet 1 .

When hitting a target substance such as a human body, the entire bullet penetrates this substance. Corresponding to the initial penetration of a few centimeters (2 to 3 cm), the disintegration of the front part of the bullet 1 is slower. All fragments are attracted to the target material and almost all of the shot energy is transferred to the target material after about 15 cm. This creates a so-called oscillation space with a volume of approximately one liter (1 dm ³ ). In this case, the bullet 1 behaves like an explosive with a shock effect and is extremely harmful to the target substance.

Another essential feature of the armor-piercing bullet 1 is its high muzzle velocity, for example in a 9mm Luger pistol with V ₀ =756m/s, energy E ₀ =829J of a four-inch bullet and an average pressure inside the barrel of 297MAa. This speed is achieved by a combination of the low mass of the bullet and the special formulation and filling of the cartridge case by the ammunition. It involves a properly compressed ammunition powder. A fixed amount of ammunition is first placed in the case or clip and compressed with a certain amount of pressure (forming a projectile with the internal dimensions of the case). Alternatively, a pre-pressed projectile conforming to the shape of the cartridge can be inserted into the cartridge case. In this way the cartridge is supplied with a substantial amount of energy which is released by the fuse throughout the passage of the bullet through the barrel without dangerously exceeding the minimum allowable pressure within the cartridge. The substantially longer pressurization phase required during the combustion of the charge of the ammunition and throughout the acceleration of the bullet inside the barrel thus produces a completely different bending. The pressure at the muzzle is therefore increased compared to normal ammunition, for example in a 9mm Luger cartridge (a pistol commonly used by police and special forces) which increases exponentially.

In a shotgun cartridge, almost three times the velocity and energy of normal ammunition would not be produced without the compression of the ammunition. Also, for a lightweight bullet weighing, for example, 2.9 grams, this method of formulating and filling the cartridge ensures the general functionality of the gun (pistol and automatic weapon) for repeatability, self-filling, etc.

Industrial use of the present invention

The armor-piercing projectile according to the invention can be used in particular to destroy ballistic shields used by individuals or vehicles. These include Kevlar body armor, especially for invisibility cloaks and to stop armored vehicles. At the same time, it is impossible for these bullets to rebound and cause danger to adjacent areas.

claims

(Amended in accordance with Article 19 of the Treaty)

1. A bullet barrel composed of a bullet case (13) and a bullet (1) with a gunpowder filler (16), wherein the bullet (1) includes a bullet body (2), and when the bullet (1) hits the barrier, The front part of the body (2) can be separated in a controlled manner by a tough plug (4) in the weakened area of its peripheral wall, and the body (2) has a rear base (6) and a peripheral wall defining an axial Opening (7) in which the armor-piercing core (3) is arranged, wherein the body (2) comprises a leading front part (5) and a rear part (17) having a larger diameter corresponding to the caliber of the gun , characterized in that, between the front part (5) and the rear part (17) of the bullet (1), the body (2) has a deformed wall (10) of reduced thickness, whereby it is compatible with the shouldered rear part ( 17) forms a tear zone at the front of the body (2), while the front end (8) of the armor-piercing core (3) becomes pointed, and the toughness plug (4) is filled in with a radial tolerance placed on the body ( 2) The space between the front end of the core (3) and the adjacent part of the inner wall of the opening (7) of the body (2), the front surface of which constitutes the impact surface (20) of the bullet (1) At least most of them.

2. Cartridge according to claim 1, characterized in that the deformation wall (10) is formed by the bottom of a rectangular groove arranged radially in the body (2) of the bullet (1), and the rear wall of the groove It is also the front surface of the shouldered rear portion (17) that forms the first impact surface (18).

3. The cartridge according to any one of claims 1 and 2, characterized in that the front portion (5) of the body (2) shrinks into a circle along the direction of exiting from the opening (19), so that the bullet The impact surface (20) of (1) forms a tough plug (4), and the sharp point of the conical front end (8) of the bullet core (3) sinks into this contact surface (20).

4. The cartridge according to any one of claims 1-3, characterized in that at least one other part of the body (2) of the bullet (1) is behind it in the direction from the front wall of the bullet (1) part (17) in the area of the cutout in the peripheral wall.

5. Cartridge according to claim 4, characterized in that the rear part (17) of the body (2) has at least one radial cut (12) on the outer periphery.

6. Cartridge according to claim 4, characterized in that the rear part (17) of the body (2) has at least one helical cut on the outer periphery.

7. The cartridge according to claim 4, characterized in that the outer peripheral edge of the rear portion (17) of the body (2) has radial cuts evenly spaced apart.

8. The cartridge according to claim 5 or 6, characterized in that, the radial slits (12) of the two trapezoidal cross-sections are spaced from each other along the axial direction of the narrow cross-section and placed at the rear portion (17) of the body (2) ), the front wall of each slit (12) is at right angles to the axis of the bullet (1), and its rear wall is the second and third impact surface portions (18) respectively.

9. The bullet cartridge according to any one of claims 1-8, characterized in that the bottom (6) of the body (2) of the bullet (1) is filled with compressed air near the inner space of the shell (13) on its surface. ammunition filler (16) or projectile.

10. Cartridge according to any one of claims 1-9, characterized in that the armor-piercing core (3) is made of material iron, hardened steel, tungsten or sintered metal carbide with high strength, hardness and quality .

11. The bullet barrel according to any one of claims 1-10, characterized in that the tough plug (4) of the body (2) of the bullet (1) is made of materials such as lead, plastic and wax.

12. Method for making at least one radial incision in the body (2) of the cartridge (1) of the cartridge according to the preceding claims 1-11, wherein the rear portion (17) of the body (2) is shaped to have Larger diameter, and there is at least one laterally symmetrical trapezoidal cross-section radial cut (12), characterized in that the body (2) protrudes to the required smaller caliber, whereby the material of the body (2) in the region of the radial cutout becomes inhomogeneous and deformed so that the front of the radial cutout (12) straightens in the direction of protrusion until at right angles to the axis of the body (2) , while the density of material in this region increases, and its posterior part is more spread out, while the density of material in this region decreases.

Claims (13)

1. A cartridge case (13) with a powder charge (16) and a bullet (1), wherein the bullet (1) comprises a body (2) with a rear base (6) and a peripheral wall , an armor-piercing projectile core (3) is fixed along its axis, characterized in that, when the bullet (1) hits the barrier, at least one front portion of the projectile body (2) can be controlled to separate in the weakened area of its peripheral wall. 2. Cartridge according to claim 1, characterized in that the body (2) comprises a guide front (5) and a larger diameter conforming to the caliber of the gun for stabilizing and guiding the bullet (1) in the barrel. rear part (17) of the diameter, in which the armor-piercing core (3) is placed in the opening (19) in front of the body (2), with radial tolerances, between the front part (5) and the rear of the bullet (1) Between the parts (17), the body (2) has a deformed wall (10) of reduced thickness, whereby its contact zone with the shouldered rear portion (17) forms a tear zone at the front of the body (2) , and the front end (8) of the armor-piercing projectile core (3) becomes pointed and the space between the front end of the projectile core (3) and the adjacent part of the inner wall of the opening (19) of the projectile body (2) is filled with a tough plug (4) , whose outer surface constitutes at least most of the impact surface (20) of the bullet (1). 3. The cartridge according to claim 1 or 2, characterized in that the deformation wall (10) is formed by a rectangular groove bottom arranged radially in the body (2) of the bullet (1), and the rear of the groove The portion wall, which is also the front surface of the shouldered rear portion (17), forms the first impact surface (18). 4. The bullet barrel according to any one of claims 1-3, characterized in that the front portion (5) of the body (2) shrinks into a circle along the direction of exiting from the opening (19), so that the bullet The impact surface (20) of (1) forms a tough plug (4), and the sharp point of the conical front end (8) of the bullet core (3) sinks into this contact surface (20). 5. The cartridge according to any one of claims 1-4, characterized in that at least one other part of the body (2) of the bullet (1) is behind it in the direction from the front wall of the bullet (1) part (17) in the area of the cutout in the peripheral wall. 6. Cartridge according to claim 5, characterized in that the rear part (17) of the body (2) has at least one radial cut (12) on the outer periphery. 7. Cartridge according to claim 5, characterized in that the rear portion (17) of the body (2) has at least one helical cut on the outer periphery. 8. The cartridge according to claim 5, characterized in that the outer peripheral edge of the rear part (17) of the body (2) has radial cuts evenly spaced apart. 9. The bullet barrel according to claim 6 or 7, characterized in that, the radial slits (12) of the two trapezoidal sections are spaced apart from each other along the axial direction of the narrow section and placed at the rear portion (17) of the body (2) ), the front wall of each slit (12) is at right angles to the axis of the bullet (1), and its rear wall is the second and third impact surface portions (18) respectively. 10. The bullet cartridge according to any one of claims 1-9, characterized in that the bottom (6) of the body (2) of the bullet (1) is filled with compressed air near the inner space of the shell (13) on its surface. ammunition filler (16) or projectile. 11. Cartridge according to any one of claims 1-10, characterized in that the armor-piercing core (3) is made of material iron, hardened steel, tungsten or sintered metal carbide with high strength, hardness and quality . 12. The cartridge according to any one of claims 1-11, characterized in that the tough plug (4) of the body (2) of the bullet (1) is made of materials such as lead, plastic and wax. 13. Method for presetting at least one radial notch in the bullet (1) body (2) of the cartridge according to the preceding claims 1-12, wherein the rear portion (17) of the body (2) is shaped to have a relatively Large diameter with at least one laterally symmetrical trapezoidal cross-section radial cutout (12), characterized in that the body (2) protrudes to the desired smaller diameter through a stepped narrow opening in a calibrating element , whereby the material of the body (2) in the region of the radial cutout becomes inhomogeneous and deformed, so that the front of the radial cutout (12) straightens in the direction of protrusion until it is at right angles to the axis of the body (2), At the same time the material density in this area increases, and its rear part is more spread out, while the material density in this area decreases.

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