High velocity projectile

A projectile comprising

• a fore end;
• an aft end;
• a body defining a nose at the fore end and having a posterior part at the aft end;
• a jacket of denser and stronger material than material of the body and surrounding the posterior part of the body;
• the jacket defining a plurality of apertures disposed in an annular array about the jacket, the jacket sized diametrically in a vicinity of the array of apertures to be engraved by rifling of a gun barrel;
• means acting at target impact for enhancing jacket fragmentation by eruption of the posterior part radially through the array of apertures;
• the enhancing means comprising an aft wall at the aft end, the aft wall being of material which is stronger and denser than the material of the body;
• the enhancing means further comprising a flat, generally planar head in the nose, the head being formed of a material stronger than the material of the body, the head oriented generally parallel to the aft wall.

A high speed short range projectile, comprising:

• a longitudinal axis;
• a fore end;
• an aft end;
• a plastically deformable body defining a nose at the fore end and having a posterior part at the aft end;
• a jacket surrounding the posterior part, the jacket of denser and stronger material than material of the posterior part;
• first means for enhancing jacket fragmentation by eruption of the posterior part radially through the jacket at target impact, the first means comprising apertures in an annular array around the jacket, the jacket sized diametrically in a vicinity of the array of apertures to be engraved by rifling of a gun barrel;
• second means for enhancing jacket fragmentation by eruption of the posterior part through radially through the jacket at the array upon target impact, the second means comprising a core in the body disposed along the longitudinal axis, the core being of stronger material than material of the body;
• a flat, generally planar head of the core disposed in the nose of the body.