Thompson Center Arms 8108R Encore Katahdin 400 Legend 20" Silver S/S Brl En

The Thompson Center Encore Katahdin 400 Legend barrel is a stainless steel drop-in replacement barrel built for serious accuracy and all-weather durability. If you already own an Encore Katahdin rifle platform and want to add a new caliber or extend the life of your receiver, this 20-inch stainless barrel transforms your setup into a dedicated 400 Legend shooter—no gunsmithing required. The fluted profile maximizes rigidity while keeping weight down, and Thompson Center test-fires every Pro Hunter barrel at 100 yards to confirm accuracy before it ships.

The 400 Legend is a modern, efficient straight-wall cartridge gaining real traction with hunters who want a flatter-shooting, longer-range option compared to traditional handgun rounds, yet still respect the spirit of straight-wall regs in certain states. This barrel's stainless construction means it'll hold up to field use, wet conditions, and the elements without sacrificing the accuracy that makes the 400 Legend appealing in the first place.

Because it comes drilled and tapped for scope mounts, you can mount an optic directly to the barrel with standard rings—no milling, no trips to a gunsmith. Simply swap it onto your Encore Katahdin frame and you're ready to work up loads. Keep in mind this barrel is engineered specifically for the Encore series; it will not fit Contender or G2 Contender frames.

Key Features

• Stainless steel construction for corrosion resistance and durability in the field
• Fluted profile delivers a strong, lightweight barrel that maintains accuracy
• Factory test-fired at 100 yards for reliability out of the box
• Drilled and tapped for scope mounts—no gunsmithing required
• 20-inch barrel optimized for 400 Legend ballistics
• Drop-in fit on Thompson Center Encore Katahdin frames

Specifications

Frequently Asked Questions

Will this barrel fit my Thompson Center Contender or G2 Contender?

No. This barrel is designed exclusively for Thompson Center Encore series rifles and will not fit Contender or G2 Contender frames.

Do I need to have the barrel fitted or tapped by a gunsmith?

No gunsmithing is required. The barrel drops in on your Encore Katahdin frame, and it comes pre-drilled and tapped so you can mount a scope using standard rings.

What makes the 400 Legend a good choice?

The 400 Legend is a modern, efficient straight-wall cartridge that delivers flatter trajectory and longer range than traditional handgun rounds while remaining legal in many straight-wall jurisdictions. This 20-inch barrel is optimized for the cartridge's ballistics.

Has Thompson Center test-fired this barrel for accuracy?

Yes. Every Pro Hunter barrel is factory test-fired at 100 yards to verify accuracy before shipping.