Oblong Bullets

—Are denominated by their diameter and weight. About 1600, when rifles began to be used as a military weapon, spherical bullets were fired; in the early part of the 18th century, however, it was found that good results could be obtained by the use of oblong projectiles of elliptical form. The great difficulty, however, of loading the rifle, which was ordinarily accomplished by the blows of a mallet on a stout iron ramrod, prevented it from being generally used in regular warfare. The foregoing plan was afterwards improved by making the projectile a little smaller than the bore, and wrapping it with a patch of cloth greased to diminish the friction in loading. The improvements which have been made in the last thirty years have entirely overcome this difficulty, and rifles are now almost universally employed, although until 1855 the ma of the American infantry was armed with smooth-bored muskets. The first person to overcome the difficulty of loading rifles was M. Delavigne, an officer of the French infantry. His plan, proposed in 1827, was to make the projectile small enough to enter the bore easily and to attach it to a sabot, which, when in position, rested upon the shoulder of a cylindrical chamber formed at the bottom of the bore to contain the powder. In this position the projectile was struck two or three times with the ramrod, which expanded the lead into the grooves of the barrel. The method of Delavigne was afterwards improved by Thou venin and Minié, both officers of the French service. The projectiles suggested by them were elongated in form and the metal of the projectile was forced into the grooves of the rifling by means of a plug or cup driven into the base of the projectile, which was cast hollow for that purpose. The cup used in the Minié bullet wits made of sheet-iron. Mr. Greener of England appears to have been the first person to utilize this expanding or dilating action. Various other bullets have been invented, of greater or le usefulne , as the Whit worth, Pritchett or Enfield, and those used in the French, Austrian, and Swi services. In the British service, the Enfield bullet is employed; this has a perfectly smooth exterior, and a conical boxwood plug inserted into a cavity at the base; they are made by machinery which draws in a coil of leaden rod, unwinds it, cuts it to the required length, stamps out the bullets with steel dies, drops them into boxes, and conveys them away.