Buck and ball was a common load for muzzle-loading muskets, and was frequently used in the American Revolutionary War and into the early days of the American Civil War. The load usually consisted of a .69 caliber round lead musket ball that was combined with three to six buckshot pellets.
Buck and ball was issued in paper cartridges that combined the projectiles with the black powder propellant charge to facilitate rapid loading of the weapon. The buckshot would set in front of the ball, so that the ball would act as a gas seal for the buckshot. Like any other paper cartridge, the rear of the cartridge would be torn open to expose the powder, which would be loaded, and the remaining paper, balls, and buckshot would be rammed down on top.
The intent of the buck and ball load was to combine the devastating impact of the full-size (normally .65 caliber) ball with the spreading pattern of a shotgun, and served to greatly improve the hit probability of the smoothbore musket used in combat, especially at closer ranges, where the buckshot would retain significant energy, and against closely packed troops where the spread of the buckshot would be advantageous.
Claud E. Fuller, in his book The Rifled Musket, shows tests of a rifled musket firing Minie balls, and a smoothbore musket firing round ball and buck rounds at various ranges against a 10' x 10' target. The firers consisted of several men in line shooting in volley. At ranges of 200 yards (180 m) and under, the buck and ball from the smoothbore musket, while less accurate than the rifled musket, actually produces a greater number of hits due to the greater number of projectiles. At 200 yards, 37 of 50 Minie balls strike the target, vs. 18 of 50 smoothbore balls and 31 of 150 buckshot, for a total of 49 hits in 50 shots. At 100 yards, 50 shots by smoothbore buck and ball against the 10 x 10 target result in 79 buckshot hits and 37 ball strikes, as opposed to 48 minie ball hits in 50 shots. Beyond this range, the buckshot will have lost too much energy to be effective due to its lower ballistic coefficient.
Perhaps the most famous proponent of the buck and ball loading was George Washington, who encouraged his troops to load their muskets with buck and ball loads during the American Revolution. The Union Irish Brigade retained their smoothbore muskets until late in the American Civil War so they could fire buck and ball during the relatively close range battles. The buck and ball load was standard issue throughout the Seminole Wars of 1815 - 1845. With the advent of general issue rifled muskets in the American Civil War, and longer engagement ranges during the later stages of the war, the buck and ball loading began to fade from use. Buck and ball did see action in the remaining inventory of smoothbore muskets at Gettysburg and later actions. The effective Irish Brigade use of buck and ball against Pickett's Charge is notable. The buck and ball load has been replaced in current military inventories by standard buckshot loadings in the combat shotgun.
- W. Hays Parks (October, 1997). "Joint Service Combat Shotgun Program". http://www.loc.gov/rr/frd/Military_Law/pdf/10-1997.pdf.
- The Rifle-Musket vs. The Smoothbore Musket, a Comparison of the Effectiveness of the Two Types of Weapons Primarily at Short Ranges
- Ordnance manual for the use of the officers of the United States army (1862), page 270
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