410 3 22 Inch Barrel for. Thompson Center Arms Encore. With TSOB Scope Base Extra Full Choke (0.380), Browning Invector PLUS Pattern, Straight Rifled. 410 Bore 3″ Encore 22″ Barrel – TSOB Scope Base, Extra Full Choke (0.380), Invector PLUS, Straight Rifled. 410 Bore barrel delivers precision craftsmanship and dependable performance for the Thompson/Center Encore platforms. Measuring 22 inches in length and chambered for 3. 410 shells, this barrel is built for shooters who demand accuracy, consistency, and premium fit and finish. The straight-rifled bore is optimized for tight, repeatable patterns, while the Extra Full choke (0.380) provides maximum constriction for dense shot placement. The choke follows the Browning Invector PLUS pattern, offering compatibility with a widely available and proven choke system. Equipped with an integrated TSOB (T’SOB®) scope base, this barrel allows direct mounting of optics without the need for additional adapters, ensuring a secure and streamlined setup. Whether used for hunting or precision shooting applications, this SSK barrel reflects the quality and attention to detail the brand is known for. Barrel Length: 22 inches. Compatibility: Thompson Center Arms Encore. Choke: Extra Full (0.380). Choke Pattern: Browning Invector PLUS. Scope Mount: Integrated TSOB scope base. Tapered, Special (0.810). The Encore Shot Gun / Turkey Barrel has a working range of up to 40 Yards. In our testing we found the following. Shot Size: 3 Federal TSS#9. Density within 30 Inches: 93%. NOTE ANTLERS NOT INCLUDED. NOTE ANTLERS NOT INCLUDED – Only the barrel is for sale.