NEW PRODUCTION THOMPSON CENTER BARRELS MADE IN NEW HAMPSHIRE. PLATFORM: THOMPSON CENTER Encore PROHUNTER. CALIBER: XT MUZZLELOADER BARREL W/T-HANDLE RAMROD AND BLACK NITRIDE COATED 1/4 TURN FINGERTIP BREECH PLUG. RATE OF TWIST: 1 IN 24 TWIST RATE. 865 HEAVY CONTOUR ANY MUZZLELOADER FOREND WILL WORK FINE. FOREND SCREW SIZE/SPACING: 5 Centers. SCOPE BASE: DRILLED AND TAPPED FOR ANY STANDARD TC 4 HOLE BASE.