IP Library › Granted Patent US 12,638,277
Granted Patent B1
US 12,638,277 · App. 18/339,248 · Granted May 26, 2026

Ammunition tuned for a given firearm barrel length and system and method for making the same

Inventors: Gregory Young (Minneapolis, MN); Frederick Hazzard (Andover, MN); Michael Young (Minneapolis, MN)
F42B5/16F42B5/02F42B33/02F42B33/0285F42B33/0292F41A21/00F41A31/00F42B30/02
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Quick Facts
Patent No.
US 12,638,277
App. No.
18/339,248
Granted
May 26, 2026
Kind
B1
Abstract

A system and method for the determination of an optimal ammunition round based upon a barrel length of a given firearm and resulting ammunition. The ammunition is preferably provided in a single load for a given caliber and bullet optimized for a range of barrel lengths, wherein a user can select a preferred single load for a given firearm regardless of barrel length.

Claims (8)

1 . An ammunition for a given caliber of a projectile, the ammunition comprising:

a single load, wherein the single load is selected for use in firearms having a first barrel length within a first set of predetermined barrel lengths and a second barrel length within the first set of predetermined barrel lengths, wherein the single load is optimized for the first set of predetermined barrel lengths based upon an optimal barrel time of the single load.

2 . The ammunition of claim 1 , wherein the first set of predetermined barrel lengths each comprises a range of barrel lengths.

3 . The ammunition of claim 2 , wherein the ammunition load is optimized based upon a time that the projectile travels the first barrel length within the first set of predetermined barrel lengths and the internal pressure of the barrel.

4 . The ammunition of claim 3 , wherein the time the projectile travels in the first barrel length is specified so it does not coincide closely with an arrival of a shockwave at a barrel crown.

5 . The ammunition of claim 4 , wherein the time the projectile travels in the first barrel length is specified so it coincides closely with a time when a transverse wave is rising and near a peak.

6 . The ammunition of claim 2 , wherein the ammunition load is optimized based upon a first set of factors, wherein the first set of factors include a time that the projectile travels each of the first and second barrel lengths within the set of the first and second predetermined barrel lengths and the distance required to fully burn the single load.

7 . The ammunition of claim 2 , wherein the ammunition load is optimized based upon a first set of factors, wherein the first set of factors include a powder burn rate and the ability to fully consume the powder within the first set of predetermined barrel lengths.

Continuity (2)
Continuation In Part 16418208 · May 21, 2019
Provisional Application 62675477 · May 23, 2018
References Cited (7)
US 5798473A · Roblyer · 1998 [cited by examiner]
US 9182201B2 · Coffman, II · 2015 [cited by examiner]
US 10012484B2 · Pearlson · 2018 [cited by examiner]
US 11761742B1 · Young · 2023 [cited by examiner]
US 20160258723A1 · Pearlson · 2016 [cited by applicant]
Shock Wave Theory—Rifle Internal Ballistics, Longitudinal Shock Waves, and Shot Dispersion, 2004 http://www.the-long-family.com/OBT_paper.htm. [cited by applicant]
Optimal Barrel Time Concept—Jun. 16, 2016 http://www.the-long-family.com/optimal%20barrel%20time.htm. [cited by applicant]