Barrel (firearm)

“ ON GUN BARRELS.
Long and Short Barrels.—A long barrel may be preferable for several reasons: 1st. A longer distance between the sights is given and the back sight can be put farther from the eye, so that finer sighting is possible; 2d. A long barrel is steadier in off-hand shooting; 3d. It permits a slower burning powder to be used, so that the charge starts more slowly and yet allows the full strength of the powder to be used before it leaves the barrel, getting a high initial velocity with but little recoil. ”

“ Even if there be a small air space between the powder and the ball or shot cartridge it will affect the shooting. Every one using double guns should accustom himself to the use alternately of both barrels, not only for safety but for good shooting. A barrel is often said to be a poor shooter, when its bad qualities may be wholly ascribed to the air space produced above the powder by the recoil occasioned by firing the other barrel.
To Prevent Gun Barrels from Rusting.—Heat the barrel to about the temperature of boiling water, no higher, and then cover it with a good coating of copal varnish. ”

“ You will frequently hear them heaping anathemas on a hard barrel, when floating it, and wishing the man who invented steel barrels “in the shades below.” Ask these men’s opinions, [198] and if they expect to have the job of filing the barrels, they will surely recommend you soft iron, stub-twist, or charcoal-iron.
Boring and grinding gun-barrels generally take place under the same roof; the borer occupying a very small shop, the grinder a large one. Two men and two boys are generally found in a shop. ”

“ But what if the gun-barrel does become hot? The real trouble is not that the cartridge will explode prematurely, but that the barrel will expand as it grows hot, so that the bullet will fit too loosely in the bore. Inside the barrel the bore is rifled ”

“ This barrel differs from the thundering barrel, which we shall describe in the following section, only in having no grenades; and when it is placed upon a glacis, it lights up or discovers the works of the besieger. It has a fuse in only one of its ends.
When shavings are boiled in the composition for links and [504] fascines, or of tourteaux, and arranged layer by layer, scattering, over each stratum, some priming-powder, the combustion must be rapid, when the barrel is set on fire. ”

“ Fitting Barrels Together.—When selecting a pair of gun barrels, preparatory to joining them for the purpose of making a double-barreled gun, it is necessary to ascertain if the barrels be of the same length, and have the same size at breech and muzzle, and also at points between the breech and muzzle. Nearly all shot-gun barrels are ground, or made some smaller at the centre of their length than at other portions. Any one who is not conversant with this may be somewhat surprised on placing a straight-edge along the side of a barrel, a common musket barrel, for instance. ”

“ The barrel, made of a strong alloy of nickel, has its cartridges fed in by means of belts coiled in boxes attached to the breech-casing, the boxes moving with the latter so that the movements of the gun do not affect it. ”

“ This furnished a barrel having a thickness of metal in all parts of the arch equal, or 3-16ths of an inch thick, capable of bearing an internal pressure of 6,022 lbs. to the inch of the tube.
[8] Dr. Ure falls into an error in describing the process of barrel boring: he says “the barrel is first properly annealed, and allowed to cool gradually,” &c. The barrel-maker that would take such a proceeding with a barrel of ours should never do so to another. The Doctor ought to have pointed out the evil tendency of this. ”

“ It is on this that the mistaken supposition is founded, that short barrels will shoot as far as long ones. It is true that with a small charge, or very fine powder, the short barrel will kill at the distance of thirty yards, as well as the long one ”

“ They have a method of allowing the barrel to revolve in their hands at half the rate of the stone, and by this means they grind them so fine that many would be puzzled to determine whether they had been turned or ground, were the barrel smoothed lengthways merely to take out the marks of the stone. We have seen the squares of a rifle barrel ground to as perfect an octagon as the eye could assist in forming. Best barrels are generally turned after they are ground. Inferior barrels are struck up with a large rubber, or smooth, by boys ”

“ A barrel, which recoils from being light, or from not being held firmly when fired, throws shot very weakly. So, on the other hand, barrels which have sufficient weight to break the recoil, or which are placed against something solid when fired, have their shooting power amazingly increased. ”

“ There is one advantage derived from grinding barrels, namely, that the friction of the stone being continuous, the temper of the barrel is not so much affected as where the tool in the slide-rest is cutting a considerable portion at once; for all barrels are best, and superior to their compeers, which require least metal to be either ground or turned off their surface, as there is a density on the outer which is not in the interior portion. ”

“ The barrel fast gathered headway. It crossed the road like some live thing, to bring up against the farmhouse with a terrific smash.
Instantly the barrel fell into a dozen pieces as its staves caved in. ”

“ The open-ended barrel projecting balls, and eventually bursting, is a beautiful and interesting elucidation, both of the force of gunpowder and the stubborn nature of the atmospheric fluid. All these facts are valuable, inasmuch as they lay bare circumstances which have never been satisfactorily accounted for, and enable the mind of lowest capacity to understand the cause and effect. ”

“ The short barrel has an advantage over the long one inasmuch as it can be handled with greater quickness and the sight can be brought to bear more readily, especially if the game be moving. If the barrel be long enough to give the charge the full benefit of the propelling power of the powder it may be deemed all sufficient. ”

“ A powder barrel is a common barrel, filled with powder, to roll from the top of a breach, or upon the head of a sap from the glacis. The barrel contains from 100 to 200 pounds of powder, and is covered with a cloth. A hole is made at each end, in which a fuse may be fixed, of such a size, that the fire may be communicated to the powder, at the moment when the barrel, rolled from the top of the breach, is met by the troops mounting to the assault. ”

“ The workman then placed the barrel of the musket upon a rest in such a position that the reflected line in the mirror could be again reflected, through the bore of the barrel, to his eye,—the inner surface of the barrel being in a brilliantly polished condition from the boring. When the barrel is placed at the proper angle, which practice enables the person performing this duty to accomplish at once, there are two parallel shadows thrown upon opposite sides of the inner surface, which by another deflection can be made to come to a point at the lower end. ”

“ That a barrel creating explosive force, until the charge is in the act of leaving the muzzle, will shoot better than another which does not do this, there cannot exist a doubt; for this is the germ of the science. Also that the column of air in barrels, where the explosive fluid is sooner expended, acts upon the wadding, and influences the lateral direction of the shot, there can also be no doubt ”

“ The rifle barrel is placed behind the ear of each victim in prompt succession, the other kneeling men gazing up the line to see when their turn is coming, sometimes even laughing aloud at a bad shot, and as each man falls on his face from the force of the discharge a guard yanks the body out straight and cuts off the leg-irons. ”

“ Next to absence of friction is the construction of the gun barrel. Already have we shown that the [279] inner surface of a gun barrel requires to be like glass; next to this it is necessary that the metal should be composed of the most unyielding structure. Metals absorb force in proportion to their softness: a barrel constructed of lead gives the worst result of any metal; in truth, as is the increase of tenacity and density in the tube, so is the increase of range in projectiles. ”

“ The one great end generally sought in a rifle is sufficient weight to neutralise the force of the explosion or recoil; and the additional barrel answers this as effectually as additional thickness of iron in the single. But there is one objection which I have never been able to master in the construction of double rifle barrels, and I much doubt the possibility of effectually overcoming it—another proof that mathematical demonstrations are frequently wrong in practice, however correct in theory. ”

“ If the arm is to be a double-barrel shot gun, the barrel next goes into the hands of a workman who joins it to another barrel with the [26] utmost nicety; to attain which, levels and other suitable instruments are brought into requisition. Like the man who straightens the bore, the man who joins the barrels must be a workman of great skill. ”

“ The weight of the bullet is reduced from 480 grains to 384, the powder charge being the same as in the former rifle, 85 grains. A wooden hand guard is fixed over the breech end of the barrel to protect the hand of the soldier when the barrel becomes heated by rapid firing. ”

“ Of course the barrel has a slow progressive as well as rotary motion during this process, and the tool itself, with the rest in which it is firmly screwed, advances or recedes very regularly and gradually, in respect to the work, as the process goes on, in order to form the proper taper of the barrel in proceeding from the breech to the muzzle. The main work however in this turning process is performed by the rotation of the barrel. The workman thus treats his material and his tools with strict impartiality. In the boring, the piece remains at rest, and the tool does its work by revolving. ”

“ With the long barrels, a coarse, slower burning powder may be used and get a good result, but as a general thing cut off the barrel to a convenient length for off-hand shooting and moving game, use a finer-grained powder, which will be quicker burning and just as good results are obtained.
A gun having barrels over thirty inches in length, must needs be made with heavy barrels, and is very fatiguing to carry in an all day hunt. A gun of this kind, to be safe and well-proportioned, ought to weigh nine or ten pounds. ”

“ The barrel was only 2 feet 6-in. long, and the projectile cylindro-conoidal, with an iron cup weighing 620 grains; thus proving that great length of barrel is not absolutely necessary in a rifle; but a certain length of barrel is required to fire in double ranks, and so that the weapon may be effectually used as a pike. Advantage of small bore.With a small bore, a greater number of rounds of ammunition may be carried, greater penetration, velocity, lower trajectory, and more accuracy, than with larger projectiles of equal weight. ”

“ The barrel, mounting, and lock, should be covered with a composition, to render them as dull, and as little discernible, as possible. The locks should always be in the very best firing order, and constructed to give fire as easily as the nature of the service will admit. Oil, for the inside of the rifle, should be regularly served ”

“ Each barrel has its own breech-plug, striker, spring, and extractor, and each fires independently of the rest, so that all are not out of action together. The gun has a swivelled mount easily elevated and trained, and the steel frames take up the force of the discharge. In rapid firing one gunner [Pg 99] can work the firing-handle while another lays and alters the direction. The firing is operated by a lever working backwards and forwards by hand, and the gun can be discharged at the rate of 600 rounds per minute. ”

“ On igniting the train, a tremendous explosion takes place. The windows are then drawn up, the door opened, and the smoke dissipated. The twist barrels are found buried in the sand, the common ones are thrown forwards; some are found perfect, others burst to pieces. It is rarely that best barrels are found burst; more frequently they are bulged, or swelled out, in places which are faulty, or of a softer temper. Those that are found perfect, are then marked with the provisional punch of different sizes (but having the same impression) , according to the quality of the barrel. ”

“ An inner barrel, having a bore of .22 inch and a length of 17 inches, its upper end counter-bored, is inserted in the barrel and secured by a screw; the length of the block is such as to close the space between the chambered recess and the end of the inner barrel. A hole is bored through the side of the stock to communicate with the hole through the breech-screw. A dart is fired from this musket, which when fired into the target is extracted with a claw-tool. The men in firing stand at a distance of 15 paces from the target; and two men use the gun, firing alternately. ”

“ No person who understands anything about a rifle would select a light gun with a large bore, any more than he would have a heavy carriage for a small horse. If the man objects to the weight of the rifle, let him content himself with a smaller bore, but do not rob the barrels of their good metal for the sake of a heavy ball. The more metal that the barrel possesses in proportion to the diameter of the bore, the better will the rifle carry, nine times out of ten. ”

“ Long barrels are useless, because all the velocity that can be given to the projectile has to be generated in the revolving chambers; all the superfluous force escaping at the joint of breeches and barrels. For any useful purpose, a nine-inch would be better than a longer barrel, allowing the bullet to leave the muzzle at a much higher velocity than it would do after passing through a barrel of thirty inches. It is evident, indeed, that [398] a revolving pistol and a revolving rifle are possessed of power in inverse ratio to their lengths. ”