Product Description Specifications The Deluxe model of the Howdah features beautiful walnut wood, a coin finished receiver with engravings, and plum blued barrels. Weight (lbs.): 4.19 Action: Side by Side Caliber: .45 Colt/.410 Grooves: 6 Twist: 0.0659722222222222 Barrel Length: 10 Overall Length: 16.625 Available Calibers: .45 Colt/.410