LONG RANGE BULLET

• US 20170138709A1
• Filed: 06/24/2015
• Published: 05/18/2017
• Est. Priority Date: 06/24/2014
• Status: Active Grant

• Current Assignee: Peregrine Bullets (Pty) Ltd.
• Original Assignee: Peregrine Bullets (Pty) Ltd.
• Inventors: OBERHOLSTER, Alliwyn Johannes
• Granted Patent: US 10,739,118 B2
• Time in Patent Office: Days
• CPC Class Codes: F42B 10/42 Streamlined projectiles
• CPC Class Codes: F42B 10/44 Boat-tails specially adapted for drag reduction
• CPC Class Codes: F42B 14/00 Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
• CPC Class Codes: F42B 14/02 Driving bands; Rotating bands F42B14/04 takes precedence
• CPC Class Codes: F42B 33/00 Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor F42B5/188 takes precedence; manufacturing processes for hollow charges F42B1/036; manufacture of blasting cartridge initiators F42B3/195

Abstract

The invention provides a long range bullet. The bearing surface of the body of the bullet is provided with one or more annular narrows of which the combined length is at least one third of the length of the bearing surface of the bullet and which depth is between 0.005 mm up to half of the groove depth of a barrel in which the bullet is intended to shoot.

Claims

1. A bullet of which the bearing surface of the body is provided with one or more annular narrows of which the combined length is at least one third of the length of the bearing surface of the bullet and which depth is between 0.005 mm up to half of the groove depth of a barrel in which the bullet is intended to shoot.

2. A bullet as claimed in claim 1, wherein each narrow is between 0.005 and 0.025 mm deep.

3. A bullet as claimed in claim 1, wherein each narrow has a concave profile.

4. A bullet as claimed in claim 3, wherein the concave profile is selected from a circular, segmented and a complex contour.

5. A bullet as claimed in claim 1, wherein more than one narrow is provided in the bullet such that at least two groove diameter parts of the bullet are located inside a case neck.

6. A method for making a bullet, which includes removing only the amount of material that makes up the volume of friction pressure material.

7. A bullet as claimed in claim 6, wherein remaining touching bearing surfaces are 10% of the length or more of the bearing surface.