Metallic Practice Cartridge Bullet

Abstract

The present invention relates to a metallic practice cartridge bullet, in particular for use on, in particular police, shooting ranges, comprising a, in particular ogive-shaped bullet nose, with a central cavity and a bullet tail, wherein the bullet is made of iron, in particular soft iron, with a carbon content of more than 0.05%.

1 . Metallic practice cartridge bullet ( 1 ), in particular for use on, in particular police, shooting ranges, comprising a, in particular ogive-shaped, bullet nose ( 27 ) with a central cavity and a bullet tail ( 39 ), wherein the bullet ( 1 ) is made of iron, in particular soft iron, with a carbon content of more than 0.05%. 
     
     
         2 . Bullet ( 1 ) according to  claim 1 , wherein the carbon content is in the range from 0.06% to 1.14%, in particular in the range from 0.08% to 0.12%. 
     
     
         3 . Bullet ( 1 ) according to  claim 1 , which is made of a material comprising, in addition to iron, at least one further transition metal, for example selected from the group comprising manganese and copper, in particular at a mass fraction from 0.01% to 1.2% or from 0.3% to 1%. 
     
     
         4 . Bullet ( 1 ) according to  claim 1 , wherein the iron of the bullet comprises at least one additive selected from the carbon group, the nitrogen group and/or the oxygen group, wherein in particular the at least one additive is a semimetal, in particular silicon, and/or has a weight percentage of at least 0.01% to at most 0.48%. 
     
     
         5 . Bullet ( 1 ) of  claim 1 , wherein the iron has a manganese content from 0.01% to 0.8%, in particular from 0.03% to 0.6%. 
     
     
         6 . Bullet ( 1 ) according to  claim 1 , wherein the iron has a silicon content of less than 0.5%, in particular less than 0.4% or less than 0.3%. 
     
     
         7 . Bullet ( 1 ) according to  claim 1 , wherein the iron has a phosphorus content in the range from 0.01% to 0.04%, in particular in the range from 0.02% to 0.03%. 
     
     
         8 . Bullet ( 1 ) according to  claim 1 , wherein the iron has a sulfur content in the range from 0.01% to 0.04%, in particular in the range from 0.02% to 0.03%. 
     
     
         9 . Bullet ( 1 ) according to to  claim 1 , wherein the iron has a copper content of less than 0.4%, in particular less than 0.3% or less than 0.25%. 
     
     
         10 . Metallic practice cartridge bullet ( 1 ), in particular according to  claim 1 , in particular for use on, in particular police, shooting ranges, comprising a, in particular ogive-shaped, bullet nose ( 27 ) with a central cavity and a bullet tail ( 39 ), wherein a nose wall ( 33 ) delimiting the cavity circumferentially is provided on its inner and/or outer side with at least one circumferential predetermined buckling point ( 73 ) at which the wall thickness of the nose wall ( 33 ) decreases abruptly. 
     
     
         11 . Bullet ( 1 ) according to  claim 10 , wherein the nose wall ( 33 ) is provided with at least two or three predetermined buckling points arranged at a distance from one another in the longitudinal direction of the bullet. 
     
     
         12 . Bullet ( 1 ) according to  claim 10 , wherein the change in wall thickness is in the range from 1% to 5%, in particular in the range from 2.5% to 3.5%, of the caliber diameter and/or in the range from 15% to 25%, in particular about 20%, of the wall thickness of the nose wall ( 33 ) at the axial height of the predetermined buckling point ( 73 ). 
     
     
         13 . Bullet ( 1 ) according to  claim 10 , wherein the predetermined buckling point ( 73 ) has a sharp-edged base ( 75 ) receding radially inwards or projecting radially outwards and/or a flank ( 77 ) oriented at an acute angle with respect to the longitudinal direction of the bullet. 
     
     
         14 . Metallic practice cartridge bullet ( 1 ), in particular according to  claim 1 , in particular for use on, in particular police, shooting ranges, comprising a, in particular ogive-shaped, bullet nose ( 27 ) with a central cavity and a bullet tail ( 39 ), wherein a nose wall ( 33 ) delimiting the cavity circumferentially tapers continuously from a tail-side cavity base towards a bullet tip ( 35 ) and/or is formed in a step-like manner. 
     
     
         15 . Bullet ( 1 ) of  claim 14 , wherein the cavity extends from a front-side opening ( 53 ) toward a tail-side cavity base and the wall thickness of the nose wall ( 33 ) at the axial height of the front opening ( 53 ) is in the range from 10% to 50% of the wall thickness of the nose wall ( 33 ) at the axial height of the cavity base. 
     
     
         16 . Bullet ( 1 ) according to  claim 14 , wherein each step ( 59 ) is formed by a change in wall thickness in the range from 1% to 5%, in particular in the range from 2.5% to 3.5%, of the caliber diameter and/or in the range from 15% to 25%, in particular of about 20%, of the wall thickness of the nose wall ( 33 ) at the axial height of the step ( 59 ). 
     
     
         17 . Metallic practice cartridge bullet ( 1 ), in particular according to  claim 1 , in particular for use on, in particular police, shooting ranges, comprising a, in particular ogive-shaped, bullet nose ( 27 ) with a central cavity, wherein the wall thickness of a nose wall ( 33 ) delimiting the cavity at the bullet tip ( 35 ) is in the range from 0.1 mm to 2 mm, in particular in the range from 0.2 mm to 1.5 mm. 
     
     
         18 . Bullet ( 1 ) according to  claim 1 , wherein the bullet tip ( 35 ) is formed by a circumferential, in particular planar, ring, the wall thickness of which is less than 1 mm or than 0.8 mm and/or greater than 0.5 mm. 
     
     
         19 . Metallic practice cartridge bullet ( 1 ), in particular according to  claim 1 , in particular for use on, in particular police, shooting ranges, comprising a, in particular ogive-shaped, bullet nose ( 27 ) with a central cavity which is delimited at the tail-side by a cavity base, and a bullet tail ( 39 ), wherein the cross section of the cavity base is point-symmetrical and deviates from a circular shape. 
     
     
         20 . Metallic practice cartridge bullet ( 1 ), in particular according to  claim 1 , in particular for use on, in particular police, shooting ranges, comprising a, in particular ogive-shaped, bullet nose ( 27 ) with a central cavity which is delimited at the tail side by a cavity base, and a bullet tail ( 39 ), wherein a nose wall ( 33 ) delimiting the cavity has on its inner and/or outer side at least one edge oriented in the longitudinal direction of the bullet. 
     
     
         21 . Bullet ( 1 ) according to  claim 20 , wherein the edge is formed as a notch and/or wherein the nose wall ( 33 ) has a plurality of edges arranged at a, in particular uniform, distance from one another in the circumferential direction. 
     
     
         22 . Bullet ( 1 ) according to  claim 1 , wherein the nose wall ( 33 ) has, on its inner or outer side, at least one circumferentially oriented, in particular completely circumferential, notch, in particular at least two or at least three notches arranged at a distance from one another. 
     
     
         23 . Bullet ( 1 ) of  claim 22 , wherein the notch has a notch depth of at most 60% of a wall thickness of the nose wall ( 33 ). 
     
     
         24 . Bullet ( 1 ) according to  claim 1 , wherein the metal or iron bullet body is subjected to a heat treatment process, in particular annealing, for example at a temperature above 600° C., in particular at 650° C., and/or for a period of about 4.5 h. 
     
     
         25 . Bullet ( 1 ) according to  claim 1 , which is produced without a heat treatment process, in particular annealing. 
     
     
         26 . Bullet ( 1 ) according to  claim 1 , the central cavity of which is produced by solid forming, in particular by cold forming, such as deep drawing or extrusion, wherein in particular the bullet ( 1 ) is produced by means of solid forming, in particular by cold forming, such as deep drawing or extrusion. 
     
     
         27 . Metallic intermediate ( 10 ) for the production of a practice cartridge bullet, in particular according to  claim 1 , in particular for use on, in particular police, shooting ranges, comprising a ductile blank, for example of iron, which is cold-massively deformed into the intermediate ( 10 ) by means of pressing, a cylindrical solid base end section ( 49 ) and a press end section ( 51 ) with a central press recess introduced by pressing and a wall delimiting the press recess for forming a, in particular ogive-shaped, bullet nose, the inside and/or outside of which has a stair contour ( 57 ). 
     
     
         28 . Intermediate ( 10 ) according to  claim 27 , wherein the stair contour ( 57 ) has at least two or three steps ( 59 ) arranged at a distance from one another in the longitudinal direction of the bullet, wherein in particular at each step ( 59 ) a change in wall thickness is formed which lies in the range from 1% to 5%, in particular in the range from 2.5% to 3.5%, of the outer diameter and/or in the range from 15% to 25%, in particular at about 20%, of the wall thickness of the wall at the axial height of the step ( 59 ). 
     
     
         29 . Intermediate ( 10 ) according to  claim 27 , wherein the stair contour ( 57 ) comprises at least one step ( 59 ) and the at least one step ( 59 ) comprises a step base ( 61 ) receding radially inwardly or projecting outwardly and oriented substantially transversely to the longitudinal direction of the intermediate and/or a step flank ( 63 ) oriented substantially in the longitudinal direction of the intermediate, in particular perpendicularly adjoining the step base ( 61 ). 
     
     
         30 . Intermediate ( 10 ) according to  claim 27 , wherein the press recess extends from a front opening ( 53 ) without forming an undercut in the direction of a tail-side, in particular planar, press recess base, wherein in particular the press recess has a constant cylindrical cross-section. 
     
     
         31 . The intermediate ( 10 ) of  claim 27 , having a substantially constant outer diameter. 
     
     
         32 . Metallic intermediate ( 10 ), in particular according to  claim 27 , for producing a practice cartridge bullet, in particular according to one  of the preceding claims , in particular for use on, in particular police, shooting ranges, comprising a ductile blank, for example of iron, which is cold-massively deformed into the intermediate ( 10 ) by means of pressing, a cylindrical solid base end section ( 49 ) and a press end section ( 51 ) with a central press recess introduced by pressing and a wall of substantially constant wall thickness delimiting the press recess for forming a, in particular ogive-shaped, bullet nose. 
     
     
         33 . Method of producing a bullet ( 1 ) formed according to  claim 1 . 
     
     
         34 . Tool for producing a bullet ( 1 ) formed according to  claim 1 .