Sub-calibrated projectile for a gun

Abstract

The projectile ( 1 ) is composed of a body divided into a front part ( 2 ) and a rear part ( 3 ), the latter being hollow. In the front part is embedded and fixed under pressure an axial rod ( 4 ) which terminates in a hard tip ( 6 ) located towards the front, which is conical in shape and terminated in the form of a cap ( 7 ), this tip ( 6 ) closing the front end of an air chamber ( 5 ) set axially in the front part ( 2 ) of the body ( 1 ) of the projectile, in such a way that when the projectile impacts, the tip ( 6 ) is displaced towards the inside of the chamber ( 5 ), which it causes to be compressed, thus converting the projectile ( 1 ) into pellet. The body of the projectile ( 1 ) is cylindrical and the helicoidal external grooves, like the body of which they form part, are made of lead with a high antimony content, and due to their remain intact when fired, a fact which, in combination with the hollow rear part ( 3 ), provides the trajectory with a great degree of precision. For loading in the firearm, the projectile is arranged within a container, which retains it and acts additionally as a shock-absorbing element and stopper for the gases generated on firing.

1 . Subcalibrated projectile for shotguns which, belonging to the same type as those which include a steel rod fixed axially in the body of the projectile, this rod terminating in a tip situated to the fore, having also a series of helicoidal grooves on its lateral surface, being intended for shooting by hunting shotguns, whether smooth-bore or rifle-barrelled, is characterised in that it is composed of a single body ( 1 ) with a hollow rear part ( 3 ) and a front part ( 2 ) in which is duly and suitably fixed under pressure the rod ( 4 ) which bears the front tip ( 6 ), this tip being conical in form, its convex external surface in the form of a cap, this conical tip ( 6 ) closing the mouth of an air chamber ( 5 ) to be found in that front part ( 2 ) of the body ( 1 ) of the projectile, which, on being compressed by the tip ( 6 ) on impact with the animal transforms said body of the projectile into pellet; while it has also been intended that, when loaded in the corresponding barrel of the firearm of shotgun, it is positioned in a container ( 9 ), formed by tabs ( 10 ) arranged at equal angles to each other in a circular trajectory, these tabs ( 10 ) each being endowed on their inner face with claws ( 11 ) for interlocking on a step ( 8 ) set in the form of a ring in the body ( 1 ) of the projectile, for the retention of the projectile within said container ( 9 ), provision also having been made for the rear part ( 12 ) of the container to be closed.  
     
     
         2 . Subcalibrated projectile for shotguns, according to  claim 1 , characterised in that the projectile ( 1 ) is cylindrical and the helicoidal grooves ( 1 ′) in its lateral surface are variable in number and markedly inclined.  
     
     
         3 . Subcalibrated projectile for shotguns, according to preceding claims, characterised in that the hollow ( 3 ′) created in the rear part ( 3 ) of the body ( 1 ) of the projectile is occupied by a filler material ( 15 ), through which passes a rear prolongation of the rod ( 4 ), the rear end of which is fixed by means of special pressurised nuts or some similar element ( 16 ).  
     
     
         4 . Subcalibrated projectile for shotguns, according to  claim 3 , characterised in that the filler material ( 15 ), which occupies the hollow ( 3 ′) of the rear part ( 3 ) of the body of the projectile ( 1 ), is high-pressure polythene.  
     
     
         5 . Subcalibrated projectile for shotguns, according to any of the preceding claims, characterised in that the front end of the rod ( 4 ) is conical in shape ( 6 ′), resting at its base on the flat end corresponding to the front part ( 2 ) of the body ( 1 ) of the projectile.  
     
     
         6 . Subcalibrated projectile for shotguns, according to preceding claims, characterised in that the tabs ( 10 ) corresponding to the container ( 9 ) have some internal projections ( 11 ′) with an arched profile in order to retain the body of the projectile ( 1 ), with the special feature that, from these arching projections ( 11 ′) and as far as the free end of the tabs ( 10 ) are formed inclined planes ( 17 ) which assist in the departure of the body of the projectile ( 1 ) from the container ( 9 ).