Rifle

Springfield Rifle MusketAn 1863 Model Springfield rifle musketThis was a single shot, muzzle-loading gun that used the percussion cap firing mechanism. It had a rifled barrel, and fired the .58 caliber Minié ball. The first rifled muskets had used a larger .69 caliber Minié ball, since they had simply taken .69 caliber smooth bore muskets and rifled their barrels. Tests conducted by the U.S. Army indicated that the .58 caliber was more accurate at a distance. After experimenting with the failed Maynard Primer system on the Model 1855 musket, the Model 1861 reverted to the more reliable percussion lock. The first Model 1861 Springfields were delivered late in that year and during 1862 gradually became the most common weapon carried by Union infantry in the eastern theater. Western armies were slower to obtain Springfield rifles, and they were not widely used there until the middle of 1863.