Training Cartridge, Gun Barrel Insert & Assembly

Abstract

A training cartridge ( 5 ) and gun barrel insert ( 1 ) assembly, wherein: a) the training cartridge ( 5 ) comprises a sleeve ( 17 ) shaped and configured to fit the breech of a gun and which holds a primer ( 21 ) and bullet ( 20 ) assembly; the assembly being located at the rear portion of the cartridge ( 5 ); a channel ( 22 ) extending forward from the bullet ( 20 ) and a recessed front channel portion ( 4 ) for receiving the sub-calibre barrel portion ( 3 ) of a corresponding gun barrel insert ( 1 ); and b) the corresponding gun barrel insert ( 1 ) comprises a sleeve ( 2 ) shaped and configured to fit at least in part into the barrel ( 10 ) of a gun; the sleeve ( 2 ) being located around a sub-calibre barrel ( 3 ); wherein the sub-calibre barrel ( 3 ) extends rearward beyond the sleeve ( 2 ) in order to project into the recessed front channel portion ( 4 ) of the corresponding training cartridge ( 5 ) .

1 - 20 . (canceled) 
   
   
       21 . A training cartridge and gun barrel insert assembly, wherein:
 a) said training cartridge comprises a sleeve shaped and configured to fit the breech of a gun and which holds a primer and bullet assembly; said assembly being located at the rear portion of the cartridge; a channel extending forward from said bullet and a recessed front channel portion for receiving the sub-calibre barrel portion of a corresponding gun barrel insert; and   b) said corresponding gun barrel insert comprises a sleeve shaped and configured to fit at least in part into the barrel of a gun; the sleeve being located around a sub-calibre barrel; wherein the sub-calibre barrel extends rearward beyond the sleeve in order to project into said recessed front channel portion of said corresponding training cartridge.   
   
   
       22 . An assembly according to  claim 21 , wherein the cartridge sleeve has an outer portion of plastics material and an inner portion of metallic material holding the primer and bullet. 
   
   
       23 . An assembly according to  claim 21 , wherein both sleeves have outer portions of plastics material and incorporate inner portions of metallic material. 
   
   
       24 . An assembly according to  claim 21 , wherein the sub-calibre barrel extends rearward by a minimum of 10 mm. 
   
   
       25 . An assembly according to  claim 24 , wherein the sub-calibre barrel extends rearward by approximately 20 mm. 
   
   
       26 . A training cartridge comprising a sleeve shaped and configured to fit the breech of a gun and which holds a primer and bullet assembly; said assembly being located at the rear portion of the cartridge; a channel extending forward from said bullet and a recessed front channel portion for receiving, in use, a corresponding sub-calibre barrel portion of a gun barrel insert. 
   
   
       27 . A gun barrel insert comprising a sleeve shaped and configured to fit at least in part into the barrel of a gun; the sleeve being located around a sub-calibre barrel; wherein the sub-calibre barrel extends rearward beyond the sleeve in order to project, in use, into a recessed front channel portion of a corresponding training cartridge.