Firearm with a cartridge

Abstract

A firearm with a cartridge has a barrel with an inside surface, a barrel length that is measured starting from a chamber to a barrel muzzle, and a barrel shaft, wherein the cartridge has a single, sabot-free projectile with a peripheral surface. A gap that is open end-to-end in the direction of the barrel shaft is present along at least 90% of the barrel length and over at least 90% of the circumference of the projectile between the peripheral surface of the projectile and the inside surface of the barrel.

1 . Firearm ( 1 ) with a cartridge ( 3 ), which has a barrel ( 2 ) with an inside surface ( 8 ), a barrel length (L) that is measured starting from a chamber ( 4 ) to a barrel muzzle, and a barrel shaft, wherein the cartridge ( 3 ) has a single, sabot-free projectile ( 5 ) with a peripheral surface ( 9 ), wherein a gap ( 10 ) that is open end-to-end in the direction of the barrel shaft is present along at least 90% of the barrel length (L) and over at least 90% of the circumference of the projectile ( 5 ) between the peripheral surface ( 9 ) of the projectile ( 5 ) and the inside surface ( 8 ) of the barrel ( 2 ). 
     
     
         2 . The firearm according to  claim 1 , wherein the gap ( 10 ) has a minimum width (B), measured in the radial direction of the barrel ( 2 ), of at least 0.2 mm. 
     
     
         3 . The firearm according to  claim 1 , wherein the gap ( 10 ) has a minimum width (B), measured in the radial direction of the barrel ( 2 ), of at most 2 mm. 
     
     
         4 . The firearm according to  claim 1 , wherein the barrel ( 2 ) has an inside surface ( 8 ) that is essentially smooth. 
     
     
         5 . The firearm according to  claim 1 , wherein the barrel ( 2 ) has an inside surface ( 8 ) with an essentially uniform inside diameter (D L ) over the barrel length (L). 
     
     
         6 . The firearm according to  claim 1 , wherein the barrel ( 2 ) has an inside surface ( 8 ) with an inside diameter (D L ) that changes along the barrel length (L). 
     
     
         7 . The firearm according to  claim 6 , wherein the barrel ( 2 ) has an inside surface ( 8 ) with an inside diameter (D L ) that narrows before the barrel muzzle. 
     
     
         8 . The firearm according to  claim 6 , wherein the barrel ( 2 ) has an inside surface ( 8 ) with an inside diameter (D L ) that increases at a distance of 5 to 10 cm from the chamber ( 4 ). 
     
     
         9 . The firearm with a cartridge according to  claim 1 , wherein arms ( 12 ) that run in the direction of the barrel shaft and that project radially inward from the inside surface ( 8 ) are arranged on the inside surface ( 8 ) of the barrel ( 2 ), and wherein, measured in the peripheral direction, the arms ( 12 ) adjoin the peripheral surface ( 9 ) of the projectile ( 5 ) over at most 10. 
     
     
         10 . The firearm with a cartridge according to  claim 9 , wherein an inside diameter (D F ) of the arms ( 12 ) is constant over the barrel length (L). 
     
     
         11 . The firearm with a cartridge according to  claim 1 , wherein projections ( 14 ) that run in the direction of the barrel shaft and that project radially outward from the peripheral surface ( 9 ) are arranged on the peripheral surface ( 9 ) of the projectile ( 5 ), and wherein, measured in the peripheral direction, the projections ( 14 ) adjoin the inside surface ( 8 ) of the barrel ( 2 ) over at most 10%. 
     
     
         12 . The firearm with a cartridge according to  claim 1 , wherein the cartridge ( 3 ) has a sleeve ( 6 ), in which a propelling charge that is used as propellant as well as the projectile ( 5 ) are accommodated at least in sections. 
     
     
         13 . The firearm with a cartridge according to  claim 1 , wherein the propelling charge has an offensive powder. 
     
     
         14 . The firearm with a cartridge according to  claim 1 , wherein the projectile ( 5 ) has an essentially spherical or oval shape or a cylindrical shape with a conical or ogival tip. 
     
     
         15 . The firearm with a cartridge according to  claim 1 , wherein the firearm ( 1 ) is a small arm, in particular a gun or a handgun, or a cannon. 
     
     
         16 . A method ( 1 ) for firing a single, sabot-free projectile ( 5 ) of a cartridge ( 3 ) from a firearm, comprising: providing the firearm ( 1 ) comprising a barrel ( 2 ) with an inside surface ( 8 ), a barrel length (L) that is measured starting from a chamber ( 4 ) to a barrel muzzle, and a barrel shaft; arranging the cartridge in the chamber; and firing the firearm; wherein the projectile ( 5 ) has a maximum circumference and a peripheral surface ( 9 ), so that as the projectile ( 5 ) moves along at least 90% of the barrel length (L) and over at least 90% of the maximum circumference of the projectile ( 5 ) between the peripheral surface ( 9 ) of the projectile ( 5 ) and the inside surface ( 8 ) of the barrel ( 2 ), a gap ( 10 ) that is open end-to-end in the direction of the barrel shaft is present, through which gap the propellant accelerating the projectile ( 5 ) flows past the projectile ( 5 ). 
     
     
         17 . The method Use according to  claim 16 , wherein the firearm ( 1 ) is a firearm ( 1 ) with a cartridge ( 3 ) according to  claim 2 . 
     
     
         18 . The firearm according to  claim 1 , wherein the gap ( 10 ) has a minimum width (B), measured in the radial direction of the barrel ( 2 ), of at least 0.3 mm. 
     
     
         19 . The firearm according to  claim 1 , wherein the gap ( 10 ) has a minimum width (B), measured in the radial direction of the barrel ( 2 ), of at least 0.5 mm. 
     
     
         20 . The firearm according to  claim 1 , wherein the gap ( 10 ) has a minimum width (B), measured in the radial direction of the barrel ( 2 ), of at most 1 mm.