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Chadwick & Trefethen
The Chadwick & Trefethen "E" adjustable reamer is a precision gunsmithing tool designed for 10 and 12 gauge shotgun barrel work. Built for gunsmiths and serious shooters who need to open or finish bore dimensions with exacting control, this reamer delivers clean, chatter-free cuts on every pass. The blade angle geometry eliminates the vibration and tearout that can plague rougher reamering work, giving you consistent results across multiple barrels without the frustration of false starts or rework.
If you're working with tightly choked 12 gauge barrels, keep in mind that some may benefit from preliminary work with a Chadwick & Trefethen "D" reamer before stepping up to the "E"—a detail worth knowing before you're deep into a project. The adjustable design gives you control over cut depth and fit, a feature valued by gunsmiths who need flexibility without sacrificing precision.
This is the tool for professionals and advanced hobbyists who maintain their own shotguns or take on serious barrel work. It's the kind of tool that pays for itself the first time you avoid a scrap barrel by getting the dimensions right the first time.
The Chadwick & Trefethen "E" reamer is designed for 10 and 12 gauge barrels.
Tightly choked 12 gauge barrels may require the Chadwick & Trefethen "D" reamer before using the "E". It's worth assessing your specific barrel before starting work.
The blade angle is engineered to eliminate chatter, which means each cut is clean and controlled without the vibration and tearout that can occur with less refined designs.
Chadwick & Trefethen
The Chadwick & Trefethen "E" adjustable reamer is a precision gunsmithing tool designed for 10 and 12 gauge shotgun barrel work. Built for gunsmiths and serious shooters who need to open or finish bore dimensions with exacting control, this reamer delivers clean, chatter-free cuts on every pass. The blade angle geometry eliminates the vibration and tearout that can plague rougher reamering work, giving you consistent results across multiple barrels without the frustration of false starts or rework.
If you're working with tightly choked 12 gauge barrels, keep in mind that some may benefit from preliminary work with a Chadwick & Trefethen "D" reamer before stepping up to the "E"—a detail worth knowing before you're deep into a project. The adjustable design gives you control over cut depth and fit, a feature valued by gunsmiths who need flexibility without sacrificing precision.
This is the tool for professionals and advanced hobbyists who maintain their own shotguns or take on serious barrel work. It's the kind of tool that pays for itself the first time you avoid a scrap barrel by getting the dimensions right the first time.
The Chadwick & Trefethen "E" reamer is designed for 10 and 12 gauge barrels.
Tightly choked 12 gauge barrels may require the Chadwick & Trefethen "D" reamer before using the "E". It's worth assessing your specific barrel before starting work.
The blade angle is engineered to eliminate chatter, which means each cut is clean and controlled without the vibration and tearout that can occur with less refined designs.
