EP1728044A2 - Delayed expansion hunting bullet - Google Patents
Delayed expansion hunting bulletInfo
- Publication number
- EP1728044A2 EP1728044A2 EP05736522A EP05736522A EP1728044A2 EP 1728044 A2 EP1728044 A2 EP 1728044A2 EP 05736522 A EP05736522 A EP 05736522A EP 05736522 A EP05736522 A EP 05736522A EP 1728044 A2 EP1728044 A2 EP 1728044A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- arrow
- internal
- bullet
- ammunition
- ammunition according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003111 delayed effect Effects 0.000 title description 11
- 229910001369 Brass Inorganic materials 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000010951 brass Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 239000004429 Calibre Substances 0.000 abstract 2
- 241001465754 Metazoa Species 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000035515 penetration Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 238000013467 fragmentation Methods 0.000 description 4
- 238000006062 fragmentation reaction Methods 0.000 description 4
- 239000003380 propellant Substances 0.000 description 4
- 239000012634 fragment Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 231100000518 lethal Toxicity 0.000 description 1
- 230000001665 lethal effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
- F42B12/34—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect expanding before or on impact, i.e. of dumdum or mushroom type
Definitions
- the present invention relates to ammunition for small, medium and large caliber weapons, and more particularly improved ammunition of the arrow bullet type, in particular for hunting weapons, having improved efficiency, by delayed expansion on target.
- Bullet ammunition has been known in the art for several years. They comprise a sub-projectile, or arrow, stabilized by empennage, associated with a sabot, or launcher, with the caliber of the weapon, so that the launcher surrounds at least partially the arrow, the assembly arrow - launcher being placed in a cartridge 'closed by crimping, which further comprises a primer socket and a propellant charge. Ammunition of this type is described for example in patent FR-A-2,555,728.
- Patent FR-A-2,795,170 describes munitions which meet this objective, and are essentially constituted by a bullet with the caliber of the weapon or under-calibrated, comprising a profiled front part, a central part, and a rear part. can carry a tail, and comprising, arranged along its axis, an internal arrow carried, of rigidity at least equal to that of the body of the ball. Bullets of this type are very precise and have the advantage of retaining their mass upon impact on the target.
- the diameter of the nose of the warhead represents between 40 and 50% approximately of the maximum diameter of the bullet, which gives it a significant aerodynamic drag.
- These bullets are therefore mainly intended for so-called “battue” shots, at short and medium distances, less than 150 m for rifles, and of the order of 50 to 60 m for hunting rifles.
- Conventional lead-core bullets are mainly used on low resistance targets and do not work on medium or high resistance targets.
- So-called expanding balls are also known, which have the characteristic of being deformed on impact by a mushroom-shaped expansion, including on medium resistance targets.
- US-A-4,685,397 describes a bullet with an ogival body, the head of which has a blind hole closed by an insert capable of sinking into the hole during impact, and of pushing outwards. the wall of the warhead.
- Patent EP-A-918.208 describes another embodiment of such a bullet with a cylindrical body and an ogival head having a blind hole along its axis, closed by an insert, completed by a peripheral annular groove.
- the insert sinks into the blind hole and then causes deformation by expansion of the ogival head, which is facilitated by the annular groove.
- PCT application WO 03.093758 describes a bullet with partial expansion and fragmentation comprising an orifice located in the head of the warhead, completely closed by a plug mounted on a rod, the movement of which causes the deformation of the body of the bullet.
- Application WO 0120245 describes another example of a bullet whose ogival head has a hole closed by an insert.
- Another example of an expansive one-piece ball is described in patent application WO 97.40334.
- a variant of delayed expansion hunting ball is described in patent EP-A-1,394,498 according to which the bullet body is completely crossed by an element which, on impact, causes deformation of the bullet body.
- the present invention relates to ammunition of the arrow bullet type providing excellent efficiency on target, and it relates more particularly to ammunition for hunting weapons capable of avoiding the formation of multiple fragments and of ensuring the destruction of the hard parts of said target, delaying expansion so as to release energy in the most vulnerable part of the target, especially on hard and high resistance targets.
- the present invention therefore relates to ammunition for hunting weapons of small, medium or large caliber, of the internal arrow type carried, providing controlled expansion upon impact on the target.
- the subject of the invention is also an ammunition for hunting weapons, as mentioned above, providing a delayed expansion upon impact on the target, in particular on a target with a hard and resistant shell, without reducing the effectiveness on low or medium resistance targets.
- the subject of the invention is also an ammunition for hunting weapons with improved terminal efficiency on a hard and resistant target, in particular for large game, constituted by a cartridge, consisting of a primed cartridge case, of a charge of propellant powder, and of a complete bullet comprising an internal arrow carried, if necessary associated with a launcher with the caliber of the weapon.
- the invention finally relates to a lead-free ammunition for hunting weapons having an optimized terminal ballistics, providing an almost total release of energy in the soft parts of the target after perforation of the hard part, avoiding any fragmentation of the bullet on impact.
- the ammunition for small, medium and large caliber weapons according to the present invention consists of a bullet of the caliber of the weapon or sub-calibrated, of the type comprising a bullet body comprising an ogival head and capable of carrying a tail, and an internal arrow carried inserted in an axial hole, the stiffness of the arrow being greater than or equal to that of the body of the ball, and it is distinguished in that the internal arrow is arranged in projection relative to the face front of the bullet body, can slide on impact on the target, and crosses an open conical cavity formed in the front face of the ogival head.
- this conical cavity with an expansion lip formed at the junction of the conical cavity and the front face of the ogival head. It is advantageous that this open conical cavity has a shape such that the angle of its generatrix with the axis of the arrow is between 10 and 50 °.
- the section of the internal boom is less than or equal, over its entire length, to the diameter of the axial hole. Thus, the sliding of the internal boom does not directly cause any deformation of the bullet body.
- the axial hole in which the internal arrow is inserted is preferably a blind hole, with a depth generally between 30 and 80% of the height of the bullet body.
- the sliding of the internal boom which causes the effect of delayed expansion on impact, is obtained by providing an appropriate space between the base of the internal boom and the bottom of the axial hole in which it is inserted, this space corresponding to a free distance along the axis which is greater than or equal to the sliding distance of the internal boom.
- This distance is adjusted according to the desired effect and the conditions planned for the shot. It is preferably at least equal to the length of the arrow projecting from the front face of the body of the ball. According to a preferred embodiment of the invention, this free distance, available for the sliding of the boom, is between 0.2 and 1.5 times the total length of the internal boom.
- the internal arrow protrudes from the front face of the head bullet bullet over a length generally between 2 and 7 mm.
- the head of the internal arrow first strikes the target and then sinks by sliding in the body of the bullet at the same time as it enters the target.
- the hydrodynamic pressure generated by the penetration of the head of the internal arrow into the target is practically exerted only on the front face of the internal arrow, then, when the latter sinks into the body of the ball, the projection distance of the internal arrow decreases, until the hydrodynamic pressure also exerts on the front face of the head of the ball.
- the open conical cavity formed on the ogival head and the expansion lip combine their effects to initiate the expansion deformation of the ogival head and amplify it at the same time as the bullet enters the target, thus creating a large hydrodynamic cavity in the most vulnerable part of the target.
- the internal arrow slides and recedes until it comes into abutment against the bottom of the axial hole.
- the front face of the internal arrow emerges from the bullet body, allowing the destruction, if necessary, of the hard parts of the target which may be on the trajectory.
- the internal boom consists of at least two consecutive elements arranged contiguously on the same axis. According to a variant according to the present invention, it consists of at least two consecutive elements arranged on the same axis and separated by an interval. It is advantageous, according to the invention, to provide in the munition a recoil limiter of the internal boom.
- This limiter can be constituted by a reduction in the diameter of the rear part of the hole receiving the arrow, thus forming a shoulder against which the internal arrow abuts when it slides upon impact on the target. According to a variant, it is constituted by a second arrow placed at the bottom of the hole receiving the two arrows.
- the sliding internal arrow can detach after deformation of the bullet body by expansion in the target, and the second arrow makes it possible to destroy the resistant elements possibly present in the target.
- the internal arrow has frustoconical ends.
- the frustoconical shape of the front end facilitates the start of the expansion movement of the ogival head.
- This frustoconical shape cooperates with the open frustoconical cavity surrounding the internal arrow and makes it possible to reduce the hydrodynamic pressure created during the penetration of the arrow into the target and therefore to reduce the length of the hydrodynamic channel formed.
- the front and rear ends of the arrow have the same frustoconical shape, which simplifies the manufacture of the ammunition.
- the hunting ball of the invention is clearly distinguished from expansion bullets such as those described in patents EP-A-918,208 and US-A-4,685,397 where the insert has the function of close off the axial cavity in the head of the warhead and deform it by simple displacement on impact, while the internal arrow used in the invention is designed to cause delayed expansion and does not directly cause deformation of the bullet head of the bullet body.
- the internal boom can be made in a single element or in several consecutive elements arranged on the same axis, contiguously or separately. It may be advantageous, for example, to provide an internal boom in two elements.
- the internal deflection can be of the controlled fragmentation type and include elements dispersing on impact, for example balls with a diameter substantially equal to that of the internal deflection.
- the internal jib can be made, for example, of steel, titanium, copper, brass or aluminum alloy with high mechanical resistance, or also of technical plastic material such as ABS, with very high rigidity.
- the body of the bale can be for example made of copper, or of brass containing from 5 to 40% of zinc and 95 to 60% of copper, or of a metal alloy having the desired mechanical qualities, for example of aluminum alloy or composite material based on tungsten or bismuth.
- the technique of the invention has the advantage of making it possible to completely or partially replace lead with another metal or an alloy deemed to be non-polluting.
- the tail may be made of metal or of polymer formed by plastics directly on the metallic body of the sub-projectile.
- the internal arrow and the bullet body used in the munitions of the invention can be made of the same material, for example copper or brass.
- the stiffness of the internal arrow is equal to that of the body of the ball.
- the internal arrow is made of a material of rigidity greater than that of the bullet body, and the ammunition is then of the bimetallic, or monometallic type with differentiated stiffness between the bullet body and the arrow.
- the internal arrow carried is generally in the form of a rod of revolution with constant section, coaxial with the projectile. It may be advantageous to provide ribs on the cylindrical surface in order to improve the fixation of the internal boom in the body of the ball. They may be annular or helical ribs, or, preferably, longitudinal ribs, 2 to 6 in number over part or the entire length of the cylinder, symmetrically with respect to the axis. In addition, the longitudinal ribs can be used to form fracture primers on the front face of the ball when the boom is put in place. internal cylindrical by force introduction into the previously drilled hole along the axis of the ball.
- the internal arrow carried will print its longitudinal ribs in the material of the repressed body by means of a press and thus create the primers of intended ruptures.
- These incipient fractures by cooperating with the internal arrow, favor the deformation of the head of the bullet during the impact by "petalization” or “mushrooming” in as many elements as ribs, around the central internal arrow which retains its general shape and serves as a structure ensuring the cohesion of the whole.
- They can be combined in combination with circular or longitudinal grooves made around the periphery of the bale, preferably in the zone deforming by expansion, the deformation of which must be controlled.
- the ball can be of the gyroscopic stabilization or empennage type.
- the gyro-stabilized bullet is used in a rifle with a rifled barrel, so that the rifling of the barrel, by cooperating with a tenon secured to the bullet, gives the latter a rotational movement along its axis.
- the stabilized bullets can be used in smooth-barreled weapons.
- the munitions according to the present invention can be used on very hard and very high resistance targets, on which they provide excellent terminal efficiency, without reducing their effectiveness on low or medium resistance targets. This excellent efficiency results in particular from the effect of delayed expansion on impact, after perforation of the hard and resistant parts of the target by the internal arrow.
- FIG. 1 a schematic view in partial section of an internal arrow ball according to the invention.
- Fig. 2 a half cross-section of the internal arrow ball of FIG. 1, in the target impact start position.
- Fig. 3 a schematic view of the shape of the imprint obtained on a reference target with a bullet according to the invention.
- Fig. 4 a schematic view of the shape of the imprint obtained on a reference target with an internal arrow bullet of known type.
- Fig. 5 a simplified half-view in section of a sub-calibrated bullet with internal arrow carried according to the invention, for hunting rifle.
- Fig. 1 a schematic view in partial section of an internal arrow ball according to the invention.
- Fig. 2 a half cross-section of the internal arrow ball of FIG. 1, in the target impact start position.
- Fig. 3 a schematic view of the shape of the imprint obtained on a reference target with a bullet according to the invention.
- Fig. 4 a schematic view of the shape of the imprint
- Fig. 6 a schematic half-view in section of a variant of the invention, comprising a recoil limiter of the internal boom by means of a reduction in the diameter of the hole receiving the boom.
- Fig. 7 a schematic half-view in section of another variant of the invention, comprising a recoil limiter of the internal boom by means of a second arrow.
- Fig. 8 a simplified half-view in partial section of a variant of the ball of FIG. ' 1, comprising an internal arrow with a frustoconical head.
- the caliber bullet (1) comprises a bullet body (2) and an internal arrow (3).
- the bullet body (2) is in one piece and has at its front part an ogival head (4), at its central part a bullet body (5) and at its rear part a neck constriction (6).
- Longitudinal ribs (7) are formed on the surface of the internal arrow (3) which is placed in a hole (8) drilled in the axis of the central part (5) and opening onto the front of the ogival head ( 4).
- the assembly of the bullet and the internal arrow is partially introduced into a case carrying a primer and a propellant charge, of the conventional type, not shown.
- the internal boom (3) preferably made of steel, is forcibly inserted into the hole (8) so that its front face (9) protrudes relative to the front face (10) of the warhead (4).
- the depth of the hole (8) is significantly greater than the length of the internal arrow (3) which is inserted therein.
- a force applied to the front face (9) of the internal boom (3) causes the latter to slide in the hole (8), to the bottom of the hole.
- the front face (10) of the ogival head (4) of the bullet body (2) made of brass, has an open conical cavity (11) forming with the curvature of the warhead (4) an expansion lip (12 ) facilitating the control of the expansion of the head (4) upon impact on the target.
- the opening of the cone (11) is such that the angle of the generator with the axis of the arrow is approximately 30 °.
- the central part (5) of the bullet body (2) carries on its external wall a crimping groove (13) for fitting into the cartridge, as well as separate propellant decompression grooves (14, 14 ') by friction belts (15). These decompression grooves facilitate the passage of the bullet through the barrel of the weapon after firing of the charge.
- the precise dimensions of the cap neck (6) at the rear of the bullet body are determined by the overall aerodynamic study of the ball, using known techniques.
- Figure 2 shows the position of the ball in contact with the target (16) before penetrating into it.
- the head of the internal arrow (3) On impact on the target (16), the head of the internal arrow (3) first strikes the target and then sinks by sliding into the hole (8) at the same time as the bullet enters the target in drilling a channel around the ogival head (4), by hydrodynamic effect, before any deformation of the head (4) itself.
- the hydrodynamic pressure is practically exerted only on the front face (9) of the internal boom (3).
- the distance x separating the front face (9) of the internal arrow (3) from the front face (10) of the ogival head (4) decreases until the hydrodynamic pressure is also exerted on the front face (10) of the ogival head (4).
- the deformation by expansion of the ogival head (4) begins in a second phase and is amplified in at the same time as the bullet enters the target, creating in its movement a large hydrodynamic cavity in the most vulnerable part of the target.
- the internal carried arrow (3) recedes until it comes into abutment against the bottom of the hole (8).
- the front face of internal arrow (8) is then again uncovered and emerges from the bullet body (2), allowing the destruction, if necessary, of the hard parts of the target which may be find on the trajectory.
- Figure 3 shows the shape of the imprint obtained by firing a 30 caliber ammunition according to the invention in a block of Plastiline®.
- the bullet used conforms to that of Figure 1.
- the arrow has a length of 16 mm for a diameter of 2.5 mm, is inserted into an axial hole of 17 mm, and projects 3 mm beyond the front.
- the mass of the ball in flight order is 9 g and its speed at impact on the target, perpendicular to it, is about 770 m / s.
- FIG. 3 shows that a channel (17) of about 3.5 cm in diameter (a) and 3.5 cm in length (b) has been formed in the target (16).
- the channel (17) is extended by the main cavity (18) formed by hydrodynamic cavitation phenomenon resulting from the progressive expansion of the ogival head (4) and the central part (5) of the bullet body (2), while that the channel (17) corresponds to the first phase following the impact on the target, where the front face (10) of the ogival head (4) is not yet in contact with the target due to the hydrodynamic effect .
- the cavity (18) has a maximum diameter (c) of 10.5 cm, and its height (d) is 18.5 cm. Its diameter (e) in its extreme part is 2.1 cm, that is to say substantially equal to that of the expanded bullet body (2).
- the total penetration depth of the ball is 24.5 cm and the total volume of the cavity is 1.15 1.
- the helical cracks (19) on the entire wall of the cavity (18) reflect the work developed by expansion of the ball.
- Figure 4 illustrates the result of a shot obtained with a bimetal ball of the same mass, same speed at impact, at the same angle, in the same reference target, but provided with a fixed arrow whose tip is set back 3 mm from the front face of the ogival head.
- FIG. 4 shows that the impression obtained under the same conditions is in the form of a "bottle", that is to say without an inlet channel.
- the cavity (20) formed in the target has a volume of 1.20 1, its maximum diameter (g) is 11.5 cm and this value is observed upon penetration into the target, and its depth (h) is 19.5 cm.
- This comparison of Figures 3 and 4 shows the difference in results obtained with a ball according to the invention, on the one hand, and a ball according to a known technique, on the other hand. It is also noted that the volume of the cavity formed by hydrodynamic cavitation is substantially identical in the two cases, but that the total penetration of the bullet is 25% greater in the case of the invention. As shown in Fig.
- a sub-calibrated bullet (21) is equipped with a tail (22) at its rear part, and comprises a lead-free metallic bullet body (23) carrying an internal arrow (24) projecting from the front part.
- This ball is housed in a launching shoe (25), the assembly being placed in the usual way in a primed and charged socket.
- the bullet body (23) is in one piece, and has a warhead (26) in its front part.
- the external surface of the central part has teeth (27) cooperating with grooves (28) formed in the internal face of the launching shoe (25).
- Longitudinal ribs (29) are formed on the surface of the internal arrow (24) which is partially inserted in a hole (30) drilled in the axis of the ball and opening on the front face (31) of the ball through the warhead (26).
- An open conical cavity (32) is provided in the front face of the warhead (26), forming with it an expansion lip (33).
- the sub-calibrated bullet shown in Figure 5 can advantageously be used in a shotgun with a smooth or slightly rifled barrel, for shooting distances not exceeding 100 m.
- FIG. 6 shows an alternative embodiment of the hunting ball of Figure 1.
- the axial hole drilled in the ogival head (34) and partly in the central part (35) of the bullet body has a narrowing.
- the hole (36) of the hole has a diameter equal to that of the internal arrow (37) to allow the latter to slide at impact on the target.
- the rear part of the hole (38) has a smaller diameter, thus forming a shoulder (39) at the junction of the two parts of the hole, which serves as a stop limiting the recoil of the internal boom (37).
- the respective lengths of the two front (36) and rear (38) parts of the axial hole can be chosen as a function of the conditions provided for firing, in particular as a function of the hardness of the target to be treated.
- FIG. 7 shows another variant of the invention comprising two internal arrows (40) and (41) mounted one behind the other in the axial hole and separated by a distance (1). The front internal boom (40) is blocked when it slides until it comes into contact with the rear internal boom (41).
- the setting of the distance (1) separating the two arrows can be adjusted for very hard targets, if this distance (1) is reduced, or less hard targets, if this distance (1) is longer, thus contributing to an expansion effect modulated according to the target.
- the hard parts possibly encountered in the target are taken into account firstly by the front internal arrow (40), and then by the rear internal arrow ( 41) after ejection of the front internal boom (40).
- the internal arrow (43) has frustoconical ends (44) and (45).
- the frustoconical shape of the front end (44) facilitates the start of the expansion movement of the ogival head (46), especially for shooting at targets of medium, or even low, resistance.
- This frustoconical shape (44) cooperates with the open frustoconical cavity (47) surrounding the internal arrow (43) and makes it possible to reduce the length of the hydrodynamic channel produced by the penetration of the arrow in the target by reducing the hydrodynamic pressure.
- the tests carried out using ammunition in accordance with the present invention, fired on blocks of inert material (Plastiline®), have shown excellent efficiency, and in particular deformation by controlled and delayed expansion of the bullet to the impact on the target, as shown in Figures 3 and 4.
- the invention can be applied to bullet ammunition for all weapons, and more particularly hunting weapons of all calibers, with smooth or rifled barrel.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Vibration Dampers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0402261A FR2867266B1 (en) | 2004-03-04 | 2004-03-04 | DELAYED EXPANSION HUNTING BALL |
PCT/FR2005/000485 WO2005085745A2 (en) | 2004-03-04 | 2005-03-01 | Delayed expansion hunting bullet |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1728044A2 true EP1728044A2 (en) | 2006-12-06 |
EP1728044B1 EP1728044B1 (en) | 2012-07-25 |
Family
ID=34855049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05736522A Active EP1728044B1 (en) | 2004-03-04 | 2005-03-01 | Delayed expansion hunting bullet |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1728044B1 (en) |
FR (1) | FR2867266B1 (en) |
WO (1) | WO2005085745A2 (en) |
ZA (1) | ZA200607028B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9702677B2 (en) * | 2015-04-27 | 2017-07-11 | Basic Electronics, Inc. | Ammunition for providing a multilayer flowering upon impact |
US11313657B1 (en) | 2016-11-14 | 2022-04-26 | Erik Agazim | Multi-piece projectile with an insert formed via a powder metallurgy process |
DE102019116125A1 (en) * | 2019-06-13 | 2020-12-17 | Ruag Ammotec Gmbh | Projectile, in particular deformation and / or partially fragmentation projectile, and method for producing a projectile |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2671620A1 (en) * | 1991-01-10 | 1992-07-17 | Kaladgew Andre | Bullet with controlled expansion for a weapon with a smooth or rifled barrel |
FR2795170B1 (en) * | 1999-06-18 | 2002-06-28 | Jean Claude Sauvestre | BALL WITH INTERNAL ARROW |
PT1214560E (en) * | 1999-09-10 | 2007-06-27 | Ruag Ammotec Gmbh | Partial fragmentation projectile with a penetrator in the tail of the projectile |
ITMI20021869A1 (en) * | 2002-08-30 | 2004-02-29 | Fiocchi Munizioni Spa | CONTROLLED EXPANSION BULLET. |
-
2004
- 2004-03-04 FR FR0402261A patent/FR2867266B1/en not_active Expired - Fee Related
-
2005
- 2005-03-01 WO PCT/FR2005/000485 patent/WO2005085745A2/en active Application Filing
- 2005-03-01 EP EP05736522A patent/EP1728044B1/en active Active
-
2006
- 2006-08-22 ZA ZA2006/07028A patent/ZA200607028B/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2005085745A3 * |
Also Published As
Publication number | Publication date |
---|---|
ZA200607028B (en) | 2008-01-08 |
WO2005085745A3 (en) | 2005-11-10 |
FR2867266B1 (en) | 2006-05-26 |
EP1728044B1 (en) | 2012-07-25 |
WO2005085745A2 (en) | 2005-09-15 |
FR2867266A1 (en) | 2005-09-09 |
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