Patent ID: 8291828

Claim:
A sub-caliber bullet having long-range accuracy, comprising: a forward portion, a mid-portion and an aft portion; said forward portion being a first material having a first density that is in excess of 10 g/cm 3 and said mid-portion being a second material having a second density that is less than said first density; said sub-caliber bullet having a length, L, to maximum diameter, D, aspect ratio, L:D, of at least 5:1; a diameter, d, of said forward portion and of said mid-portion satisfying an aerodynamic Power Law equation: d=D *( x/L ) n where x is a distance rearward from a nose of said sub-caliber bullet and n is a Power Law exponent that is between 0.5 and 0.75; a center of pressure; a center of gravity forward of the center of pressure; a blind bore extending into said mid-portion from said aft portion and containing a sustainer propellant; and a plurality of nozzles communicating the blind bore with an exterior surface of the bullet.