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The Thompson Center Encore Prohunter shotgun barrel in 20 gauge gives you the flexibility to hunt waterfowl, upland birds, and small game with the modularity the Encore platform is built for. This 26-inch stainless barrel with a 3-inch chamber lets you reload your Encore rifle or muzzleloader frame with a dedicated shotgun setup, turning a single firearm into a multi-season hunter. If you already own an Encore rifle or muzzleloader, swapping to this barrel means you're not locked into one caliber or one type of game—you can pursue nearly any opportunity across North America without buying a second gun.
The 20 gauge is a natural fit for hunters who want less recoil than a 12 gauge without sacrificing pattern and range on birds and small game. The 3-inch chamber accepts both 2.75-inch and 3-inch loads, giving you flexibility in ammunition selection. Stainless steel construction resists corrosion and weathering, critical when you're working a barrel that might spend time in brush, rain, or salt air.
This is the Encore's core value proposition: own one frame, own multiple barrels, own multiple hunting seasons. Whether you're building your first Encore shotgun setup or adding another barrel to an existing rifle or muzzleloader frame, this 20 gauge barrel expands what your gun can do.
| Gauge | 20 |
| Chamber | 3 inches |
| Barrel Length | 26 inches |
| Material | Stainless Steel |
| Type | Shotgun Barrel |
| Platform | Thompson Center Encore |
Yes. Thompson Center Encore barrels are designed to be interchangeable on the same Encore frame. If you own an Encore rifle or muzzleloader, you can swap this shotgun barrel onto your existing frame to convert it for 20 gauge shotgun hunting.
The 3-inch chamber accepts both 2.75-inch and 3-inch 20 gauge shotshell loads, giving you flexibility in load selection for different game and hunting scenarios.
The 20 gauge is well-suited for waterfowl, upland game birds, and small game hunting. It delivers less recoil than a 12 gauge while maintaining effective range and pattern on birds.
Stainless steel resists rust and corrosion, which is especially valuable for a barrel that may be exposed to moisture, brush, and varying weather conditions during hunting trips.

SKU: 200189947