Case bottom for large caliber ammunition and method for producing same

Abstract

A case bottom is provided for use with a large-caliber ammunition cartridge. The case bottom has a bottom section; a cylindrical section connected to the bottom section; a guide region provided on an end of the cylindrical section opposite the bottom section; and a ring-shaped elastic obturation that projects from and is connected to the cylindrical section. An outside diameter of the guide region is such that it is for supporting itself directly on an inside wall of a loading chamber for a respective weapon barrel following loading of the cartridge.

1 . A case bottom for use with a large-caliber ammunition cartridge, the case bottom comprising: 
 a bottom section;    a cylindrical section connected to the bottom section;    a guide region provided on-an end of the cylindrical section opposite the bottom section; and    a ring-shaped elastic obturation that projects from and is connected to the cylindrical section,    wherein an outside diameter of the guide region is such that it is for supporting itself directly on an inside wall of a loading chamber for a respective weapon barrel following loading of the cartridge.    
   
   
       2 . The case bottom according to  claim 1 , wherein an internal surface of the cylindrical section in the guide region is provided with an annular groove to which the elastic obturation is connected with a clip-type connection.  
   
   
       3 . The case bottom according to  claim 1 , wherein an elastomer is vulcanized to the cylindrical section to form the elastic obturation.  
   
   
       4 . A method for producing a case bottom, comprising: 
 selecting an existing case bottom having a web-type guide region extending from a cylindrical section, the guide region being enclosed on an inward radial side and an outward radial side by an elastic obturation;    removing the obturation and the guide region;    forming an annular groove in an internal surface of the remaining portion of the cylindrical section; and    installing a new elastic obturation on the cylindrical section, the new elastic obturation engaging the annular groove.    
   
   
       5 . The method according to  claim 4 , wherein the new elastic obturation in an elastomer that is vulcanized on to the cylindrical section.