Bullet and method for expanding a bullet

Abstract

During impact of an opening solid-material bullet, a slightly concave or substantially blunt-nosed nose structure of at most 1.2× caliber is provided to such a bullet by mushrooming to generate a blast wave. The bullet opens to a size that is 1.1 to 1.15× caliber. The mushrooming is achieved by arranging on the nose of the bullet a cavity that is in the direction of the center axis of the bullet and has a substantially even-sized diameter.

1 - 9 . (canceled) 
     
     
         10 . A hunting bullet that comprises a body made of solid material metal and has on a nose thereof and in a center axis thereof a substantially cylindrical cavity that comprises at least two consecutive cavity parts,
 wherein a diameter of the nose of the bullet is arranged to mushroom under the effect of a pressure directed to the nose as the nose hits a target,   wherein, in a direction away from the nose, a diameter of each cavity part is smaller than a preceding cavity part,   wherein the at least two consecutive cavity parts are formed in such a manner that in the direction away from the nose, the diameter of a next cavity part is smaller than the diameter of the preceding cavity part, thus forming a step-shaped discontinuity area,   wherein the consecutive cavity parts are of a length, in which a total cavity length is 40 to 70% of a caliber of the bullet, the length of the cavity part on the nose side being longer than the length of the next cavity part, and   wherein the discontinuity area of the at least two consecutive cavity parts are arranged to form a mushrooming after hitting the target, whereby the diameter of the nose is adapted to reach a size that is at most 1.2× the caliber of the bullet, and to produce a shape for the nose that is slightly concave or substantially blunt-shaped.   
     
     
         11 . The hunting bullet as claimed in  claim 10 , wherein, when hitting the target, the diameter of the bullet nose is adapted to reach a size that is at best 1.1 to 1.15× the caliber of the bullet. 
     
     
         12 . The hunting bullet as claimed in  claim 10 , wherein, when hitting the target, the bullet nose is adapted to mushroom consecutive, the mushrooming appearing at least twice. 
     
     
         13 . The hunting bullet as claimed in  claim 12 , wherein the mushrooming of the nose of the bullet to 1.1 to 1.15× the caliber of the bullet is adapted to take place substantially at a boundary of each consecutive cavity part, and wherein a continued mushrooming in a direction away from the nose is arranged to provide a controlled fragmentation of the previous mushrooming point at each discontinuity area of each consecutive cavity part. 
     
     
         14 . The hunting bullet as claimed in  claim 13 , wherein a groove-like weakening of a material neck is arranged on the bullet nose at the bottom of the cavity and/or at a joint of consecutive cavity parts. 
     
     
         15 . The hunting bullet as claimed in  claim 11 , wherein, when hitting the target, the bullet nose is adapted to mushroom consecutive, the mushrooming appearing at least twice.