The Chadwick & Trefethen ‘A’ Adjustable Reamer is a choke-reaming tool from Chadwick & Trefethen, a long-established maker of shotgun choke tools, sized to the A position in their lettered reamer lineup. A gunsmith uses a reamer like this to cut or open up a shotgun barrel’s fixed choke constriction to a different, typically more open, pattern than the barrel was originally bored. That kind of choke work calls for a properly sized, purpose-built reamer rather than improvised tooling, since a mistake can’t be undone once metal is removed. It’s a specialty tool aimed at gunsmiths who take on choke modification work rather than a general home-shop item.

Key Specifications

• A-position sizing in Chadwick & Trefethen’s lettered adjustable reamer lineup.
• Adjustable choke reaming function lets a gunsmith open a shotgun barrel’s fixed choke to a different constriction.

Frequently Asked Questions

What is this reamer used for? Cutting or opening a shotgun barrel’s fixed choke constriction to a different pattern.

Is this a tool for a home shooter or a gunsmith? It’s a specialty gunsmithing tool, since choke reaming permanently removes metal and calls for proper skill and setup.

Buy the Chadwick & Trefethen ‘A’ Adjustable Choke Reamer

Add this reamer to your gunsmithing tool kit, shipped fast from our Lubbock, Texas gun shop.