Patent ID: 9581402
Date: 2017-02-28
CPC Classifications: F41A,F42B

Claim:
1. A projectile for use with a tapered gun bore having a large caliber section, a small caliber section and a tapered section connecting said large and small caliber sections together, the projectile comprising: an elongated body having a cylindrical bulkhead with a diameter substantially equal to the large caliber section of the gun bore, a cylindrical midsection located proximate to said cylindrical bulkhead, said body having a tapered nose extending from said cylindrical bulkhead to a front end of said projectile and a tapered tail extending from a rear end of the projectile to said cylindrical midsection, a plurality of axially oriented and circumferentially spaced forward grooves extending forwardly from said bulkhead and to a point short of said front end comprising the forward grooves, a plurality of axially oriented and circumferentially spaced rearward grooves extending rearwardly from said bulkhead comprising the rearward grooves, said body being formed of a compressible material including but not limited to, copper, lead, aluminum, and steel, whereby when the projectile is fired through a tapered bore gun the body of the projectile is uniformly compressed in a controlled uniform radial pattern that affects the entire the projectile equally thus allowing for extreme velocities while maintaining accuracy.