Aiming was largely a perfunctory process, since the gun had no sights and the shot had excessive “windage,” its calibre being from one fifth to one third inch less than the bore, making its outward passage a series of rebounds and its final direction a matter of chance. “Windage,” however, was essential to facilitate muzzle-loading and to provide for the expanded diameter of red-hot shot. It is true that in 1801 a proposition to use sights was made to Lord Nelson. He, however, rejected it with the words:—
“I hope we shall be able, as usual, to get so close to our enemies that our shot cannot miss the object.”
His blind courage in this cost his countrymen dearly when, in 1812–14, their shot flew wild, while their ships were hulled and their gallant tars fell before the then sighted guns of the United States.
To ignite the charge the slow-match was still used, as is shown by the sharp words of a sailor of that time. Hailed in the darkness by a British ship and ordered to send a boat, his quick answer was:—
“This is the United States frigate Constitution, Edward Preble, commodore, commanding, and I’ll be d—d if I send a boat!”
Then to his men, silent and eager by the shrouded battle-lanterns:—
“Blow your matches, boys!”
A full crew for a 32-pounder consisted of 14 men. An old rule as to this was one man to every 500-lbs. weight of the gun, which would give the Oregon 1100 men to handle the four 13-inch rifles of her main battery, or more than twice her whole crew. Steam and mechanism have wrought a magic change in this.
The slow-match remained in use until well into the nineteenth century, although, until 1842, the flint lock was generally employed in the British navy, having replaced the priming horn and match in 1780. In 1807 there was discovered a composition which could be ignited by friction or concussion, and in 1839 the French had adopted the percussion lock, which exploded the cap and retracted, uncovering the vent before the backward rush of the gas could strike it. Later, a similar composition was used with “friction-primers,” or tubes filled with mealed powder and capped with composition, the tube forming a train leading to the charge, and the composition being fired by the friction of a rough wire drawn briskly through it. Percussion and friction have been in turn largely displaced by the electric primer, which consists essentially of a fine wire, or “bridge,” passing through a highly inflammable mixture. The bridge offers a resistance to the electric current, is heated thereby, ignites the composition, and fires the gun.
The older type of the cast-iron smooth-bore gun for solid shot reached its ultimate development in the 68-pounder, which endured until the advent of armor. In 1819 the system of firing shells loaded with gunpowder from smooth-bore guns was suggested by General Paixhans, of France. In 1824, it was introduced into the French navy, and about 1840 into that of the United States. At Sinope, in 1853, the terrible effect of shell fire upon wooden ships startled the world, when a Russian fleet destroyed absolutely 11 Turkish vessels, with their force of 4000 men. The Paixhans gun was modified and its form improved by Admiral Dahlgren, U. S. N., and in the late 50’s the armament—designed by him—of United States vessels was superior to that of any other in the world. The 9, 11, and 15-inch Dahlgrens formed the bulk of our guns afloat during the Civil War, the remainder being almost wholly rifles of the Parrott type.