US 2026/0227146 A1 · RIFLE BARREL GEOMETRY

Abstract

A firearm barrel comprising of an elongated barrel body defining a bore and having a breech end and a muzzle end. The bore includes a rifled surface with rifling having a gain twist with a twist rate of a first amount proximate the breech end and a greater second amount proximate the muzzle end. The rifling having an eased rifling profile along the length of the rifling. The eased rifling includes a radiused transition from lands to grooves and is continuous and smoothly transitioned from the groove articulated at a vertex from the land. The eased rifling includes angled surfaces transitioning between lands and grooves with angled surfaces angularly offset from radial to the bore or are offset from adjacent grooves by an obtuse angle or are offset from adjacent lands by an obtuse angle.

Claims17

Dependent claims

A firearm barrel comprising:

an elongated barrel body defining a bore and having a breech end and a muzzle end;
the bore including a rifled surface defining rifling;
the rifling having a gain twist with a twist rate of a first amount proximate the breech end and a greater second amount proximate the muzzle end;
and
the rifling having an eased rifling profile along the length of the rifling.

2 more elements

Dependencies are inferred from the claim text.

Rifle barrel geometry

Life of this patent

Rifle barrel geometry

Life of this patent

Abstract

Claims17