Patent ID: 9677863
Date: 2017-06-13
CPC Classifications: F42B

Claim:
1. In a munition, a single piece KE projectile with a defined long axis ( 810 ) wherein the KE projectile comprises; a KE projectile shaft ( 800 ) with a straight cylindrical portion ( 801 ) at a front end of the KE projectile shaft, wherein a diameter of said straight cylindrical portion ( 801 ) is the largest diameter of said KE projectile shaft, and wherein proximately following said straight cylindrical portion, the KE projectile shaft includes a plurality of buttress grooves ( 202 ) and ( 203 ) in stepped fashion, wherein a major diameter of each successive buttress groove is progressively smaller than the major diameter of a previously positioned adjacent buttress groove, and wherein each buttress groove's back end is vertical with respect to said defined long axis, and wherein a relief section of each buttress groove is horizontal with respect to said defined long axis.