Ballistic projectile

Claim 1

A BALLISTIC PROJECTILE ADAPTED TO BE FIRED THROUGH A RIFLED GUN BARREL OF SUBSTANTIALLY CONSTANT DIAMETER COMPRISING A PROJECTILE BODY HAVING A SOLID NOSE SECTION AND A SOLID REARWARD PORTION WITH A BODY PORTION THEREBETWEEN, AND A MULTIPICITY OF CLOSELY SPACED ANNULAR FLANGES ON AT LEAST THE BODY PORTION AND FORMING THEREBETWEEN A MULTIPLICITY OF NARROW GAS RECEIVING CHAMBERS WHICH ARE OF THE SAME VOLUME BEFORE AND AFTER PASSAGE THROUGH A RIFLED GUN BARREL OF SUBSTANTIALLY CONSTANT DIAMETER WHEREBY DURING SUCH PASSAGE THE PRESSURE OF THE GAS ON OPPOSITE SIDES OF EACH OF THE FLANGES IS EQUALIZED, SAID FLANGES BEING OF LITTLE RADIAL WIDTH RELATIVE TO THE DIAMETER OF THE BODY AND HAVING FORWARD AND REARWARD WALLS INCLINED FORWARDLY AND INWARDLY WITH RESPECT TO THE AXIS OF THE PROJECTILE, AT LEAST THE MAJOR PORTION OF THE REARWARD WALLS BEING AT AN ANGLE SUBSTANTIALLY GREATER THAN THAT OF THE FORWARD WALLS, SAID FLANGES BEING TRIANGULAR IN CROSS SECTION AND TAPERING FROM A RELATIVELY THICK BASE PORTION TO A RELATIVELY NARROW APEX SO AS TO BE SUBSTANTIALLY RIGID AND RESIST FLEXING OF SAID FLANGES DURING PASSAGE OF THE PROJECTILE THROUGH THE RIFLED GUN BARREL OF SUBSTANTIALLY CONSTANT DIAMETER, SAID FLANGES HAVING UNIFORM DIAMETERS SUBSTANTIALLY EQUAL TO THE GROOVE DIAMETER OF THE GUN BARREL BEFORE AND AFTER PASSAGE THERETHROUGH AND TERMINATING AT THEIR APEXES IN NARROW CYLINDRICAL FACES WHICH ARE PARALLEL TO THE AXIS OF THE PROJECTILE FOR SNUG, FLAT FACETO-FACE ENGAGEMENT WITH THE BOTTOM OF THE GROOVES OF THE GUN BARREL THROUGHOUT THEIR WIDTHS TO MAINTAIN ROTATIONAL BALANCE OF THE PROJECTILE AS IT PASSES THROUGH THE GUN BARREL.