Abstract: A projectile fired from a weapon which has a bore with inner rifling, having a point and a base which are disposed within a sleeve such that the point and base of the projectile rotate independently of the sleeve when fired from a gun or similar weapon designed to discharge projectiles or similar material.

Abstract: The present invention provides polymer ammunition, ammunition cartridge, ammunition case, and portions thereof having traditional and non-traditional cartridge shapes or profiles.

Abstract: A bullet including a drag-reducing assembly provided about its main body, and configured for being triggered upon a blast from a cartridge, in order to reduce a resulting base drag of the bullet during flight trajectory. The drag-reducing assembly includes at least one cavity being configured for receiving and containing a portion of gun gas from the cartridge and corresponding blast, and at least one peripheral orifice for releasing gun gas from the at least one cavity during the flight trajectory of the bullet, in order to fill a partial vacuum behind the bullet during flight trajectory, and thus reduce the resulting base drag, for an improved overall ballistic performance of the bullet.

Abstract: A system for detecting and neutralizing a target aerial vehicle comprises a counter-attack unmanned aerial vehicle (UAV) comprising a flight body and a flight control system supported about the flight body operable to facilitate flight of the UAV, and an aerial vehicle countermeasure supported by the flight body. The system can comprise an aerial vehicle detection system comprising at least one detection sensor operable to detect a target aerial vehicle while in-flight, and operable to provide command data to the counter-attack UAV to facilitate interception of the target aerial vehicle by the counter-attack UAV. Upon interception of the target aerial vehicle, the counter-attack UAV is operable to disrupt operation of the detected target aerial vehicle with the aerial vehicle capture countermeasure, thereby neutralizing the target aerial vehicle. The counter-attack UAV and systems may be autonomously operated. Associated systems and methods are provided.

Abstract: A cartridge comprising an elongate rifle bullet with a plurality of circumferential grooves having overmolded polymer therein defining embedded polymer rings. The cartridge further having a case and propellant. The polymer rings have an outer surface that is flush with, that is, conforming to the outer surface of the body. The polymer may have be selected to have a favorable coefficient of friction with respect to the barrel. The bands offering reduction of the metal to metal contact between the bullet and the barrel while not diminishing the ballistic coefficient of the bullet.

Abstract: A medium caliber round of ammunition capable of being fired at variable velocities and trajectories, and methods of firing such, are presented herein. The ammunition round includes a grenade and a cartridge received in a firing chamber. The cartridge has a front case for receiving the grenade, and a rear case for receiving a primer. An adjustable variator collar is disposed between the front and rear cases. The variator collar is adjustable between a first position that chokes the venting of gas from a high-side stage to a low-side stage for low muzzle velocity, and a second position for un-choking the venting of gas from the high-side stage to the low-side stage for a rapid rise in pressure during the low-side stage, resulting in a high muzzle velocity. The collar may further be adjusted in any position between the first and second for relative amounts of controlled fluid flow.

Abstract: The present invention relates to a projectile for ammunition, in particular rimfire ammunition, comprising a preferably ogive-shaped nose section and a projectile tail which has an annular recess at an end face, an annular edge circumferentially surrounding the annular recess and radially outwardly delimiting the recess in the circumferential direction, and a projection arranged in the annular recess and extending in the longitudinal direction of the projectile, wherein the annular edge, the projection and optionally the nose section are manufactured in one piece.

Abstract: A projectile for firearms is provided, which is designed as a slender rotation body for ultrasonic velocity, having an approximately cylindrical center part, a tip on the front end and a tail on the rear end which tapers conically toward a projectile base, wherein the projectile is designed such that the circumferential flow remains uniform over the entire trajectory thereof from a front shock wave, through a boundary layer enclosing the projectile body to a rear tail vortex.

Abstract: The present invention comprises a novel device, a ceramic cap that is firmly attached in a manner that prevents relative rotation axial movement or separation between the modified tip of an existing bullet and said cap to allow the modified bullet to shatter the glass of an automotive or truck windshield on contact, thus allowing the bullet to pass through the glass with a reduction of deflection incurred by non-modified bullets while producing larger bullet holes and areas of glass disruption than non-modified rounds and increasing the quantity and size of injury inflicting shrapnel.

Abstract: The disclosure describes, in various example embodiments, a small arms or firearm projectile including a shell and a hemostatic material retained within the shell. The hemostatic material has a mechanical modulus above 25,000 Pa. In some embodiments, the shell includes a plurality of perforations. In some embodiments, the plurality of perforations are configured to provide, upon an impact of the projectile, fluid communication between the hemostatic material and the exterior of the shell via the plurality of perforations. In some embodiments, the hemostatic material includes a polymer core configured to provide a scaffold for inducing hemostasis in a local wound volume. In some embodiments, the projectile includes a contrasting agent. In some embodiments, the projectile includes a lubricating agent retained in the interior of the shell. In some embodiments, the projectile further includes 0.5 to 3 grains of Kaolin retained in the interior of the shell.

Abstract: A non-lethal projectile formed by a front shell, with a hemispherical nose and a cylindrical shaft, and a base at the tail. The hemispherical nose has three or more bi-planar grooves, originating along the junction of the hemispherical nose and cylindrical shaft, extending toward the nose in an inward whorled manner, and terminating around the apex of the hemisphere. The grooves cause the projectile to spin, thereby creating a stabilizing gyroscopic effect when launched. The projectile's base has a domed shape. The convex inner surface of the dome has a profile complimentary to the hemispherical nose of the shell so that multiple projectiles may nest nose to tail when loaded into a multiple round magazine. The convex tail design moves the center of gravity forward and increases the aerodynamic stability and accuracy of the projectile.

Abstract: There is disclosed a tracer munition. There is provided a tracer munition for selective activation, the tracer munition comprising: an electronic tracer device, said tracer munition comprising at least one cavity capable of receiving said electronic tracer device wherein the electronic tracer device comprises an electrical power source and an electronic emitter, whereupon selective activation of the electronic tracer device, said electronic emitter emits radiation.

Abstract: A firearm malfunction training device and method include a blank malfunction round that simulates a T3 malfunction and allows a realistic clearing protocol during the training. The malfunction round size and shape generally mimic the corresponding live round, so that malfunction round moves like the live round through the magazine. However, the malfunction round has a front end/portion that is oversized in diameter and does not fit properly or fully through the firearm breech, to jam the firearm loading mechanism at the breech. Preferably, the malfunction round also has a conical rear region radially-undersized relative to the live round casing, whereby the malfunction round leaves the magazine when the magazine is stripped from the firearm to start the clearing protocol. The enlarged front end and undersized rear region effectively simulate, and provide a realistic protocol for identifying, clearing and, correcting, a T3 malfunction.

Abstract: A rocket propelled bullet assembly for increasing the effective range of a gun includes a shell casing that is positioned in a chamber of a gun and the shell casing has an open end. A first propellant is contained in the shell casing and the first propellant is ignited when the gun is fired. A bullet is positioned in the open end of the shell casing. The bullet is fired from the shell casing when the first propellant is ignited and the bullet is projected from the gun. A rocket unit is integrated into the bullet and the rocket unit fires when the bullet is fired from the shell casing. The rocket unit increases a velocity of the bullet when the bullet is traveling thereby increasing a range of the bullet.

Abstract: A cartridge comprising an elongate rifle bullet with a plurality of circumferential grooves having overmolded polymer therein defining embedded polymer rings. The cartridge further having a case and propellant. The polymer rings have an outer surface that is flush with, that is, conforming to the outer surface of the body. The polymer may have be selected to have a favorable coefficient of friction with respect to the barrel. The bands offering reduction of the metal to metal contact between the bullet and the barrel while not diminishing the ballistic coefficient of the bullet.

Abstract: A projectile for use with a firearm having a rifled barrel can include: a substantially cylindrical projectile body having at a front end an ogival nose section and at a rear end a tail section; a driving band section formed on the projectile body between the nose section and the tail section; a bore rider section formed on the projectile body between the nose section and the tail section; and a driving band lead-off section formed on the projectile body adjacent to the driving band section on a rearward side thereof and having an angled surface, with respect to a horizontal axis of the projectile body, that forms a transition from the driving band section to a portion of the projectile body adjacent to the driving band lead-off section on a rearward side thereof. The driving band lead-off section can be formed having an LD-Haack profile.

Abstract: A projectile for use with a firearm having a rifled barrel can include: a substantially cylindrical projectile body having at a front end an ogival nose section and at a rear end a tail section; a driving band section formed on the projectile body between the nose section and the tail section; a bore rider section formed on the projectile body between the nose section and the tail section; and a driving band lead-on section formed on the projectile body adjacent to the driving band section on a forward side thereof and having an angled surface, with respect to a horizontal axis of the projectile body, that forms a transition from the driving band section to a portion of the projectile body adjacent to the driving band lead-on section on a forward side thereof. The driving band lead-on section can be formed having an LD-Haack profile.

Abstract: A system for firing reduced energy cartridges from a modern sporting rifle utilizes a bolt assembly weighing less than a conventional bolt assembly for such rifles and utilizes blow back for cycling the bolt assembly rather than gas operation. A bolt insert in a polymer bolt carrier of the bolt assembly has a projection that fits within a recess on the rear face of reduced energy cartridges. The reduced energy cartridges having a polymer casing, a rimfire power load for propellant, the power load recessed from the rear face of the casing. The power load seats in in the casing surrounded by a reinforcement liner embedded in the polymer casing.

Abstract: A projectile comprising a central slug axially circumscribed by a segmented cylindrical sleeve having a plurality of fragmenting segments and a base that opens into an interior cavity. A flange may circumscribe the base. A wad may fill the interior cavity, remaining attached to the central slug. The wad travels with projectile to set a geometric center behind the center of gravity of the projectile. A radially-segmented cylindrical sleeve receives the central slug. The cylindrical sleeve comprises inwardly sloping segments for funneling target material into the recess between the slug and cylindrical sleeve. The segments bend outwardly upon impact and are adapted to bend, compress or flex inwardly to pass through a muzzle choke.

Abstract: The invention relates to small arms ammunition and can be used in the designs of projectiles intended for high precision long-range firing at supersonic and subsonic muzzle velocities of a projectile. A projectile of small arms ammunition comprises a head portion with a blunted nose surface, a central leading portion, and a boattail, which tapers towards the projectile base, wherein the largest diameter of the cross-section of the central leading portion is equal to “D”, the length of the head portion is equal to 1.9-2.9D, and the diameter at the interface between the nose surface and the lateral surface of the head portion is equal to 0.15-0.3D.

Abstract: A projectile device is disclosed for firing at a target. The projectile device includes a shroud, the shroud having a forward end and a rearward end. The shroud defines a channel which extends through the shroud between the forward end and the rearward end of the shroud. An insert is releasably secured to the shroud such that after the forward end of the shroud strikes the target, the insert is released from the shroud for increasing penetration of the shroud through the target.

Abstract: A firearm malfunction training device and method include a blank malfunction round that simulates a T3 malfunction and allows a realistic clearing protocol during the training. The malfunction round size and shape generally mimic the corresponding live round, so that malfunction round moves like the live round through the magazine. However, the malfunction round has a front end/portion that is oversized in diameter and does not fit properly or fully through the firearm breech, to jam the firearm loading mechanism at the breech. Preferably, the malfunction round also has a conical rear region radially-undersized relative to the live round casing, whereby the malfunction round leaves the magazine when the magazine is stripped from the firearm to start the clearing protocol. The enlarged front end and undersized rear region effectively simulate, and provide a realistic protocol for identifying, clearing and, correcting, a T3 malfunction.

Abstract: A cartridge with a steel component bullet has desirable penetration capabilities and controlled separation of components upon terminal impact. In embodiments of the invention, the cartridge comprises a steel component, a lead core, and a copper jacket. The lead jacket having a leading edge portion that extends to the cylindrical mid portion. The steel component bullet may have a forward pointed ogive portion, a cylindrical mid portion, and a tapered rearward portion. The rearwardly facing surface may be concave. The leading edge portion may have a taper oriented in a direction opposite the taper of the ogive portion of the steel component. Structure to inhibit spin is positioned on a rearward face of the steel component. The bullet having a concave rear face.

Abstract: An improved bullet disclosed includes a blend radius disposed between a first tangent thereof intersecting a shank of the bullet and a second tangent thereof intersecting one of a cone ogive and a boattail ogive of the bullet. The bullet also includes at least one dimple formed into a base of the bullet adjacent the boattail ogive, a curved segment joining the dimpled base and the boattail cone and a truncated cone ogive with a meplat end and a shank end, the truncated cone ogive adapted to produce less drag and friction in air than a secant or a tangent ogive. The improved bullet extends an effective flight range and a Coanda effect there around reducing air turbulence and drag on the bullet in flight. A cartridge adapted to receive the improved bullet is necked down and shortened for a COAL (cartridge overall length) nominally the same as conventional cartridges.

Abstract: Stepped sabots for projectiles are provided. One sabot includes a cylindrical tubular body and at least one stepped surface within the cylindrical tubular body. The stepped surface is configured for engaging at least one complementary surface on a projectile and the stepped surface forms a progressively narrower inner diameter of the cylindrical tubular body.

Abstract: A grenade round 10 comprises a projectile 12, a case 14 and a high-low propellant propulsion system 16. The system 16 includes a propellant chamber assembly 30 for holding a propelling charge 32. The assembly 30 comprises a chamber body insert 38 which defines an internal cavity and a base plate insert 42 which closes off the internal cavity. The insert 38 is screwed into the case, while the insert 42 is screwed into the insert 38. The insert 42 defines a circumferential flange 60 which extends beyond and abuts a rim formation of the insert 38. The inserts define a high strength housing for the propelling charge which is able to withstand the high pressures resulting from combustion of the propelling charge. The flange provides a relatively large area for dissipation of energy resulting from combustion of the propelling charge, into the interface between the base plate insert and the case.

Abstract: A projectile includes a body preferably in the shape of a bullet and having a density less than the density of lead. The projectile further includes a stabilizer adhered to the body. The stabilizer is configured to engage rifling of a barrel of a firearm and impart rotation to the projectile as the projectile travels through the barrel. A preferred ammunition cartridge includes a primer, a propellant, and the aforesaid projectile, as well as a casing containing the primer, propellant and projectile, with the projectile projecting from the casing. Other projectiles in accordance with aspects and features of the invention further are disclosed.

Abstract: A cartridge for use in a gun comprises a case, a gas generator, a piston, a stopper, and at least one channel for the passage of gas in and/or around the stopper wherein the piston is axially slideably contained in the case, the gas generator is located within the case adjacent a first end of the case, and the stopper is slideably contained within the piston for closing the at least one channel.

Abstract: Systems and methods for preparing a cartridge and a projectile for use in a disrupter to launch the projectile toward an explosive device to disable the explosive device. The cartridge may be selected from a group of cartridges and the projectile may be selected from a group of projectiles in accordance with the type of explosive device, the projectile selected, or other considerations for attempting to disable the explosive device. The cartridge and projectile are manually coupled by an operator of the disrupter for use in the disrupter.

Abstract: A method is described for safely opening the shell of a munition (10) having an inner chamber containing an explosive material. The method comprises the steps of machining a groove (20) into the shell along a parting line that encircles the outer surface of the munition and divides the shell into two parts. The groove (20) is of sufficient depth to weaken the shell but not to penetrate into the inner chamber of the munition. After machining the groove (20), the shell is cracked open by prising the two parts of the shell apart by inserting a suitable implement into the groove.

Abstract: Shown is a family of low spin and essentially no spin, full in-bore 40 mm projectiles which can be fired from a standard M203 or M320 grenade gun launcher. The projectiles have extended range through over 1000 meters and also have the capability for adding on guidance-navigation and control features/components for great accuracy. Increased accuracy is also provided by another, rear fin type projectile embodiment. The projectiles can be lengthened to accommodate more lethal fragments, and increased amount of explosive and energetic. At the same time, there is provided a training round of analogous performance for all these tactical projectiles.

Abstract: Provided is a cartridge for a muzzle loading firearm. The cartridge includes a cylindrical sleeve portion defining an interior passage and a forward end comprising a tapered portion. A propellant charge is disposed within the interior passage, and an end cap defines a recess into which the tapered portion extends while the end cap is installed on the tapered portion. The end cap comprises a first fastener portion that cooperates with a second, compatible fastener portion provided to a bullet. The second fastener portion is disposed adjacent to a rearward end of the bullet to establish a friction fit between the bullet and the end cap that maintains a position of the bullet on the cartridge to be loaded into the muzzle loading firearm.

Abstract: A high strength polymer-based cartridge casing includes an upper component of polymer, a bullet of a standard weight, a lower component of polymer, and an insert. The upper component has a shoulder portion and an upper component inner wall has a first diameter extending from the shoulder. The lower component has a lower component inner wall having a second diameter. The upper and lower component inner walls form a propellant chamber; and the first and second diameters reduce a volume of the propellant chamber. The reduced volume of the propellant chamber permits only enough propellant to propel a bullet engaged in the cartridge casing at subsonic speeds.

Abstract: A less than lethal cartridge for a projectile which when fired has a velocity which will not kill an individual struck by the projectile. The less than lethal cartridge has a rim which is deeper or thicker than a rim on a conventional lethal cartridge. The caliber of the cartridge is also selected so that regular lethal ammunition is not available in this caliber. The preferred caliber of the less than lethal cartridge is .490. The less than lethal cartridge contains a polymeric projectile or alternatively, a sealed filled polymeric pouch containing shot therein.

Abstract: A cartridge launched in an M203/M320 gun launcher device, which cartridge has fins of 1-5 inches in length to insure flight stability without spinning the cartridge. The non spin makes the cartridge capable of having a guidance navigation and control, canard actuating system added between the body and nose. The guidance navigation and control, canard actuating system features now make the cartridge suitable for successfully attacking stationary and moving targets not heretofore possible.

Abstract: A non-spinning 40 mm ammunition round for firing in an M320 grenade launcher. The round includes a cylindrical shaped gun sleeve cartridge case, which covers the standard rifling inside the M320, and thus presents a smooth bore surface to the fired ammunition. Because the ammunition is not launched in a spinning mode, it may now comprise those guidance and camera components as may be desired which components would not have been possible to employ on a round that is spinning.

Abstract: A bullet is formed with a hollow interior compartment which contains particles. The bullet side-wall surrounding the hollow interior compartment breaks after impact with the target to release the particles from the hollow interior compartment. Preferably, each particle in the hollow interior compartment has a core substance and a coating surrounding the core substance. The coating is designed to release the core substance after the bullet contacts a target. The core substance swells when in contact with blood, which may be time delayed in order to enter the blood stream.

Abstract: Shotshell type ammunition includes a hull, a sabot disposed within the hull, and at least one projectile disposed within the sabot. The hull has a rimless first end that includes a primer for firing the ammunition. The hull also has a seat surface for seating the hull against a complementary seat surface in a firing chamber of a firearm. The seat surface is located a distance from an outer end surface of the hull at the rimless first end. The hull further includes an outer cylindrical side surface extending from the rimless first end of the hull to the seat surface of the hull. Methods of fabricating such ammunition includes forming such a hull, providing one or more projectiles within a sabot, and disposing the sabot with the one or more projectiles therein at least partially into the hull. Shotgun type firearms are configured for firing such ammunition.

Abstract: A bullet defines a chamber and mechanism for extending an explosive body from the chamber. The chamber has a broader top portion than a lower portion. The bullet further defines a channel passage leading out of the top end of the bullet. The bullet contains the explosive body slidably engaged within the channel passage. A shaft is connected to the body and passes down from the body into the lower portion of the chamber. A thrust plate is connected to the shaft end in the chamber. The thrust plate is spring metal and when the cartridge is fired, the thrust plate rises pushing the body so that it extends from the leading end of the bullet. When the thrust plate rises to the second portion of the chamber, it springs open to prevent subsequent downward motion of the thrust plate and consequently prevents subsequent retraction of the body during flight.

Abstract: A firearm is provided that includes a receiver, a stock, an elongated barrel and a muzzle. The barrel extends from the receiver to the muzzle and has a rectangular internal bore extending from the receiver to the muzzle. The internal bore has two short sides and two long sides A plurality of teeth extends along one of the short sides within the internal bore. A disk-shaped bullet titling within the internal bore may be tired from the firearm. A bullet case having a rectangular orifice is provided to chamber the disk-shaped bullet for propulsion through the rectangular internal bore of the firearm.

Abstract: The invention relates to a weapon intended for fighting games, mainly for paintball, namely to special cartridges containing painting liquid. The special cartridge contains a cartridge case 1 that includes a propellant charge 2, a projectile 3 and a primer cap 4. The cartridge case 1 has inside a rigidly fixed nozzle 5 (variants 1, 3) for supplying a portion of the gas stream at the projectile 3 or a solid partition 7 (variant 2). The cylindrical cartridge case body 1 is provided with holes 6 on the side of the primer cap 4 that are intended to direct the gas flow (variants 1-3); in addition, the mouth of the cartridge case is also provided with holes 8 for directing the gas flow (variants 2, 3). The areas of the holes of the nozzle 5 and the total surfaces of the holes 6 and 8 are of different size.

Abstract: A high velocity munition comprises a projectile, mounted on a cartridge case, that can be fired from an automatic cannon or weapon. During storage or transport an IM venting device included in the cartridge case prevents the propellant charge from firing the projectile, leaving the cartridge damaged, but intact upon premature ignition. The IM vent exhaust channel is filled with a solid fusible material that melts at a lower temperature than the ignition temperatures of the igniter (or primer) and the propellant charge of the projectile. At least one non-fusible, ruptureable member is included in the IM vent channel and positioned to provide structural integrity to the fusible material in the channel. Alternatively or in addition to the fusible material, a shape memory alloy ring surrounds the igniter (or primer) and separates from the cartridge when the cartridge reaches a temperature that causes auto-ignition.

Abstract: Shot shell payloads that include a plurality of large projectiles and shot shells including the same are disclosed herein. The shot shell payloads include a plurality of large projectiles and at least one spacer that is formed from a different material than the large projectiles. A spacer is located between adjacent large projectiles and/or separates adjacent large projectiles. Disclosed shot shell payloads also may include one or more end spacers that are positioned to contact just one large projectile or the plurality of large projectiles in the payload.

Abstract: The present invention relates to a method for packing fin-stabilized penetrators (8) in a carrier shell (1), which penetrators (8) comprise a front penetrator part (10) and a rear fin part (9, 9?) comprising fin sides (14, 14?), so that the empty space between the penetrators (8) and problems with the penetrators upon the release of the penetrators (8) from the carrier shell (1) are minimized, wherein the penetrators (8) are packed in groups (7) and are joined together to form larger packing units (6), in which each group (7) is arranged with a centrally located penetrator (8) flanked by at least three outer penetrators (8), which outer penetrators (8) are arranged so that their front penetrator parts (10) lie side to side against the fin sides (14, 14?) of the centrally located penetrator (8).

Abstract: An ammunition capable of improving flying speed, shooting range, flight velocity, and straightness of a bullet by reducing the air resistance of the bullet due to the eddy flow of air generated at the rear portion of the bullet is provided. The wad of the ammunition includes a pressing portion having a through hole in which the cylindrical surface of the bullet is inserted, a coupling surface closely contacted to the vertical surface of the bullet, and a pressing surface extending from the through hole; and a cover portion having an inner peripheral surface which extends from the coupling surface of the pressing portion in the thrust force acting direction to cover a part of the circumferential surface of the streamlined tail portion of the bullet, and an outer peripheral surface which extends from an outer periphery of the pressing portion substantially parallel to the cylindrical surface of the bullet.

Abstract: A deployment unit for an electronic control device (ECD) used as a weapon provides a current from a signal generator of the ECD through tissue of a human or animal target. The deployment unit includes a housing, an interface, a filament, and an electrode. The interface couples the housing to the signal generator. The filament includes a first end coupled to the interface for receiving the current and comprises a second end. The filament conducts the current for inhibiting voluntary movement by the target. The electrode, stored in the housing prior to deployment, mechanically couples the filament to the target when deployed. The electrode includes an assembly of a first part and a second part that after assembly cooperate to bind the second end of the filament to the electrode.

Abstract: The invention provides a short-range, self-propelled, non-fragmenting breaching device to breach a wide variety of doors and barricades with high efficiency, high gunner safety and low collateral damage. The invention also provides a method of preparing the breaching device and a method of breaching a target using the breaching device.

Abstract: An armor penetrating round includes an elongated core portion (e.g., a hollow tool steel core) defining a front end, an aft end, and a central cavity which extends from the aft end toward the front end. The central cavity has (i) an aft cross-sectional diameter adjacent the aft end and (ii) a front cross-sectional diameter adjacent the front end, the aft cross-sectional diameter being larger than the front cross-sectional diameter. The armor penetrating round further includes a slug portion (e.g., a pre-compacted pellet of powdered metal) which is disposed within the central cavity adjacent the aft end, and an outer jacket (e.g., a copper jacket) which extends around the elongated core portion to operate as an interface between the armor penetrating round and a gun barrel when the armor penetrating round is fired through the gun barrel.

Abstract: A three component bullet with a core retention feature and a method of forming the bullet is described. The bullet can include a jacket surrounding a core and a locking band disposed around a circumference of the jacket and the core. The locking band can be received in a circumferential depression formed in the jacket and the core such as by compressing the core to cause the core and the jacket to expand radially fore and aft of the locking band. The circumferential depression can include shoulders that are in compressive engagement with the locking band to help secure the locking band in place. The circumferential depression can include an inwardly-extending annular band of jacket material which embeds itself into the core material with the result that the core is locked inside the jacket.

Abstract: A bullet has a cylindrical body portion and a conical tip monolithically formed with the body portion. The bullet is hollowed out to form an internal cavity. A sidewall defines the structure of the body portion and the conical tip. Bullet structure provides for a bore size, low weight, high velocity, and low recoil projectile having a full-bore size that does not have to expand to a larger diameter during firing in order to transfer its energy to a larger wound channel. In one embodiment, a plurality of recesses is provided on the body portion and extends through the sidewall. The recesses are disposed circumferentially in the radial direction and are offset longitudinally along a longitudinal axis of the bullet. The internal cavity includes a plurality of trusses extending in a radial direction. Instead of or in addition to, the trusses, the wall of the internal cavity may include one or more ridges.