Lacquer bullet gun barrel

Abstract

A lacquer bullet gun barrel having an inner wall, on which a plurality of projections are circularly arranged. The projections are separated by vent grooves and have top surfaces which form a broken circular circumference around a firing path for a lacquer bullet. Thus a reduced contact surface between the lacquer bullet and the inner wall results.

1 . A lacquer bullet gun barrel, comprising: 
 a barrel case with an inner wall, having a plurality of projections that are circularly arranged, separated by vent grooves and have top surfaces which form a broken circular circumference around a firing path for a lacquer bullet, so that a reduced contact surface between said lacquer bullet and said inner wall results.    
     
     
         2 . A lacquer bullet gun barrel according to  claim 1 , wherein said projections and said vent grooves linearly extend from a front end of said barrel case to a rear end of said barrel case.  
     
     
         3 . A lacquer bullet gun barrel according to  claim 1 , wherein said projections and said vent grooves linearly extend along a section of said barrel case at a front end thereof.  
     
     
         4 . A lacquer bullet gun barrel according to  claim 1 , wherein said projections have inclined side walls.  
     
     
         5 . A lacquer bullet gun barrel according to  claim 1 , wherein said projections have rounded edges.  
     
     
         6 . A lacquer bullet gun barrel according to  claim 1 , wherein said projections have convex cross sections.