Brownells Barrel Liner Drill, .25-20 Liner, .438'' (11.1Mm)

The Brownells Barrel Liner Drill in .25-20 is a precision gunsmithing tool built for gunsmiths and shooters undertaking barrel relining and restoration projects. This high-speed steel drill is engineered to bore a straight, consistent pilot hole that ensures a perfect fit for .25-20 barrel liners, maintaining the structural integrity of the firearm while restoring or improving accuracy on vintage and worn firearms.

Barrel relining demands precision that tolerates no shortcuts. This drill delivers exactly that—a uniform bore that eliminates the inconsistencies that can compromise both the function and authenticity of a restoration. Whether you're breathing new life into a classic rifle or repairing a trusted workhorse, the right tool makes the difference between a job done and a job done right. The .25-20 liner drill comes complete in a protective plastic case, ready for the bench.

Built to withstand repeated use across multiple projects, the Brownells barrel liner drill is equally suited to the professional gunsmith and the serious hobbyist willing to invest in quality equipment. At 15-1/16" overall length with a 1" pilot, it's designed to handle barrels up to 25" in length—covering the vast majority of rifles you'll encounter in restoration work.

Key Features

• High-speed steel construction for durability and repeated use
• Precision-machined to exact tolerances for consistent, straight bore
• 1" pilot diameter with .438" major diameter for .25-20 liners
• 15-1/16" overall length accommodates barrels up to 25"
• Includes protective plastic case for storage and transport

Specifications

Frequently Asked Questions

What barrels can I use this .25-20 drill on?

This Brownells barrel liner drill is designed for .25-20 caliber barrels up to 25" in length. It creates the pilot bore needed to install a .25-20 barrel liner for relining and restoration work.

What's the difference between the pilot and major diameter?

The pilot (0.247") is the smaller diameter that guides the drill and controls bore depth. The major diameter (0.438") is the full diameter of the bore created for the barrel liner. Both are precision-machined for a consistent fit.

Is this drill for professional gunsmiths only?

No. While this is a precision tool designed for barrel relining work, it's built for both professional gunsmiths and serious hobbyists. If you're undertaking a barrel restoration or relining project, this tool delivers the precision required for the job.

What comes in the box?

The Brownells Barrel Liner Drill comes with a plastic protective case for safe storage and transport between projects.