Product Description Specifications The Alaskan Variant of the Howdah 45/410 has been hard chromed with rubber overmold wood to resist the elements. 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