Sep 29, 2026

US12747924 - Sectioned reducing barrel system and method of use

A stepped, stabilized, sectioned reducing barrel for firearms is disclosed. The application enables the efficient use of standard cartridges by applying a series of bore sections that stabilize a projectile, reduce its diameter in a controlled manner, re-stabilize the shape, and finally impart rifling spin. This improves ballistic performance, reduces material usage, and extends barrel life without the need for specialized ammunition.

Inventors: Scott Barrett Rago
Filing date: 2025-08-27

firearmbarrelammunitionballistics

The patent describes a sectioned reducing barrel system for firearms that stabilizes and reduces the diameter of a projectile in a controlled manner before imparting rifling spin. This innovative design enhances ballistic performance, minimizes material usage, and prolongs barrel life without requiring specialized ammunition.

Claim 1

1 . A firearm barrel, comprising: a chamber configured for receiving a cartridge; a first internal bore section configured to stabilize a projectile without rifling; a second internal bore section configured with a tapered or stepped diameter reduction to reduce the diameter of the projectile by deforming the projectile through compressive radial force applied by the bore wall; a third internal bore section configured to stabilize the projectile at the reduced diameter without rifling; and a fourth internal bore section having rifling configured to impart spin to the projectile after stabilization at the reduced diameter only after the projectile has been fully reduced in diameter and re-stabilized in the third internal bore section, such that no rifling engages the projectile prior to completion of diameter reduction. a chamber configured for receiving a cartridge; a first internal bore section configured to stabilize a projectile without rifling; a second internal bore section configured with a tapered or stepped diameter reduction to reduce the diameter of the projectile by deforming the projectile through compressive radial force applied by the bore wall; a third internal bore section configured to stabilize the projectile at the reduced diameter without rifling; and a fourth internal bore section having rifling configured to impart spin to the projectile after stabilization at the reduced diameter only after the projectile has been fully reduced in diameter and re-stabilized in the third internal bore section, such that no rifling engages the projectile prior to completion of diameter reduction.

Google Patents

https://patents.google.com/patent/US12747924

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12747924