Product Description Specifications Similar to the High Wall Classic, The High Wall Sporting features either a 30" barrel chambered in .38-55 Winchester or the 32" chambered in .45-70 Gov. The Sporting also comes equipped with a more traditional target trigger guard lever. Weight (lbs.): 11.67 Action: High Wall Caliber: .45-70 Gov. Grooves: 6 Twist: 0.0541666666666667 Barrel Length: 30 Overall Length: 48.4375 Available Calibers: .45-70 Gov., .45-90 Sharps