The Brownells Barrel Liner Drill in .32-20 caliber is a piloted deep-hole drill built for gunsmiths who want to handle their own barrel work. This .512" (13mm) tool is designed to follow the original bore as you drill, giving you the precision and control needed for accurate liner installation when you're ready to silver solder or braze your own extension. If you're the type who likes to do the work yourself and save on labor, this drill gives you access to professional-grade tooling at a fraction of the cost of a full gunsmithing setup.

The drill incorporates deep-hole flute geometry and a special helix angle engineered to prevent jamming during the cutting process—a real consideration when you're boring deep into a barrel. The reinforced web maintains dimensional accuracy throughout the cut, so your liner hole comes out true. Nitrided lands extend the tool's working life, meaning you'll get solid performance across multiple jobs before replacement becomes necessary.

This is a piloted drill, which means it rides on the existing bore to keep your cut centered and straight. That piloting action is what separates a dedicated barrel drill from a generic deep-hole bit; it's the difference between a clean, concentric hole and a wandering one. Whether you're restocking a vintage .32-20 or building a custom rifle, having the right tool matters. Brownells has engineered this drill to the same high standards as their .22 liner drills, so you're getting proven geometry in a caliber-specific size.

The Brownells Barrel Liner Drill in .32-20 caliber is a piloted deep-hole drill built for gunsmiths who want to handle their own barrel work. This .512" (13mm) tool is designed to follow the original bore as you drill, giving you the precision and control needed for accurate liner installation when you're ready to silver solder or braze your own extension. If you're the type who likes to do the work yourself and save on labor, this drill gives you access to professional-grade tooling at a fraction of the cost of a full gunsmithing setup.

The drill incorporates deep-hole flute geometry and a special helix angle engineered to prevent jamming during the cutting process—a real consideration when you're boring deep into a barrel. The reinforced web maintains dimensional accuracy throughout the cut, so your liner hole comes out true. Nitrided lands extend the tool's working life, meaning you'll get solid performance across multiple jobs before replacement becomes necessary.

This is a piloted drill, which means it rides on the existing bore to keep your cut centered and straight. That piloting action is what separates a dedicated barrel drill from a generic deep-hole bit; it's the difference between a clean, concentric hole and a wandering one. Whether you're restocking a vintage .32-20 or building a custom rifle, having the right tool matters. Brownells has engineered this drill to the same high standards as their .22 liner drills, so you're getting proven geometry in a caliber-specific size.