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The Gilchrist Handle is the working foundation of the precision choke reaming system made by Chadwick & Trefethen. This 25-1/2 inch steel handle is designed to hold expandable angle blade reamers for fine-tuning shotgun barrel chokes or removing old chokes before installing screw-in tubes.
What makes this handle essential for gunsmithing is how it works with the reamer system. It enters through the breech and pilots directly off the bore, which means your reamer stays perfectly aligned with the barrel's centerline. That kind of precision matters when you're removing controlled amounts of steel to adjust shot patterns. Whether you're opening up a full choke for modified patterns or prepping a barrel for new tube installation, the bore-centered pilot keeps everything concentric.
The handle requires two Clymer Choke Tooling Bushings to operate. These bushings center the cutter in the bore and come in different diameters depending on your gauge. The system works for 12, 16, and 20 gauge shotguns, though pilots aren't available for 10 and 16 gauge through this method.
The Gilchrist Handle is the starting point. You'll pair it with the expandable reamer blade of your choice (C, D, or E designation depending on your target choke constriction) and the matching bushings for your barrel gauge. The angle blade expands as you turn it, letting you dial in the exact amount of material removal you want. This makes it far more controlled than older fixed-blade methods.
Chadwick & Trefethen designed this handle for gunsmiths and serious hobbyists who need results. It's steel construction built to handle the working pressures of choke reaming without deflection, and its length gives you proper leverage and control without forcing awkward angles or body positioning at the vise.
The handle itself is the foundation, but you also need a Chadwick & Trefethen expandable angle blade reamer and two Clymer Choke Tooling Bushings. The bushings center the cutter in the bore and come in different diameters depending on your gauge. Both reamers and bushings are purchased separately.
The handle enters through the breech and pilots off the bore itself, keeping the reamer perfectly concentric to the barrel centerline. This bore-piloting design eliminates guesswork and ensures consistent, accurate cuts every time you use it.
The system works on 12, 16, and 20 gauge barrels. Pilots aren't available for 10 and 16 gauge through this reaming method, but 12 and 20 gauge have full support with readily available bushings.
It's designed to do both. You can use the expandable reamer to open up existing chokes to different constrictions, which changes your shot patterns. You can also use it to completely remove old fixed chokes before installing modern screw-in tubes.
The length gives you proper leverage and control while reaming without forcing awkward angles at the vise. It also accommodates the 13-inch reamer section with enough handle for safe, comfortable operation and good mechanical advantage.
| UPC | 736681500002 |
|---|---|
| Manufacturer | |
| Style | Expandable Choke |
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