The most accurate rifle of the Civil War era, used exclusively by Confederate sharpshooters. Its hexagonal bore with a 1:20 twist firing a hexagonal bullet achieved consistent accuracy at 1,500 yards. Estimated to be responsible for more Union officer casualties than any other single rifle. The hexagonal projectile required a mallet to load, making it slow to fire. Type: Rifle Action: Percussion Caliber: .451 Whitworth Capacity: 1 Year introduced: 1855, United Kingdom Weight: 104 oz Overall length: 43.5" Status: Discontinued Military use: Yes Intended use: military