All twist barrels undergo a similar round; the time and care bestowed upon them depending entirely on the price, which varies from one pound per pair down to eighteenpence, and in some instances lower.
In a former work I noticed the introduction of a villanous system of covering or plating barrels with fine iron over a body of very inferior iron. I here quote that description:—
The deceptions practised in this branch of manufacture are numerous, and injurious to the trade. For instance, if you wish to have a heavy single barrel made from Damascus, or any of the best irons, and you send to the manufacturer the weight of iron required, the probability is, that unless you superintend the manufacture yourself, iron of an inferior quality will be introduced into the inside of the spirals. By this fraud they obtain iron worth threepence a pound more than that which they knavishly insert into the barrel. I had been repeatedly told of this practice, but was incredulous. However, I gave an order for four very heavy rifle barrels to be made of Damascus iron. They were made; but on pickling these barrels for the purpose of showing the figure of the Damascus, I discovered that the iron seemed to be much more easily eaten away at the muzzle than on the surface. This led me to examine them, when I found that the inside was entirely composed of iron, over which the covering of Damascus had been twisted. But for the pickling, this fraud never would have been detected; yet for these barrels I was charged at the rate of two barrels for each. Since this occurred, I have subjected many heavy barrels to examination, and have found the fraud to be very common. The practice is not only dishonest, but spoils the gun, by destroying the shooting power, in consequence of the metals, being of different temperatures, not acting together at the moment of expansion.
Veneering or plating barrels is more extensively practised in Belgium than in any other nation we are acquainted with; they do not conceal it, but they use equally good iron, though not ornamented iron: of this there is much doubt. The method of accomplishing this is by having the iron required rolled down into ribbons of a thin description; these are twisted spirally round a tube of common iron having the fibres running length-ways, or parallel with the bore. The accompanying [cut] will convey an idea of this method.
Many will ask what inducement have the welders to take this extra trouble? Gain. The cost of Damascus is 71⁄2d. per pound, and the iron they use for this purpose is only 11⁄4d. A pair of barrels take 14 lbs. of iron; say 6 lbs. of this is Damascus plate, costing 3s. 9d.; 8 lbs. is common, amounting to 10d. instead of 5s., or a saving of 4s. 2d. a pair. A splendid profit if you order one hundred. The borer charges less, the iron is softer, the filer has less, and all items clubbed amount to something. The facility with which welders can do this is wonderful; it clearly establishes their ability, and proves their claim to be considered the cleverest blacksmiths on the face of the earth. It is not only the best descriptions of iron they plate with: twopenny skelp is more in use than any. It is now rare to meet with painted barrels: all are genuine twist barrels, warranted; for they are mostly all plated, even down to the gun costing but fourteen shillings, wholesale price.
This is a subject of serious importance; one which the gun-makers, both metropolitan and provincial, should resolutely condemn; for safety as well as goodness of shooting cannot be secured in perfection with any barrels so constructed. I have met with plated barrels in guns which cost the purchaser thirty-five guineas, and I have detected them in some of the first makers’ guns; for the perfection with which the fraud is accomplished is wonderful, and few can detect it who are not strictly up to “the dodge.” The application of a portion of sulphuric acid into the tube at the breech end of the barrel, is the best way of showing the fraud; for, in most cases, it is all bored out at the thin portion of the muzzle, and the application there would, under these circumstances, be no test.
I have frequently been applied to by many masters in the trade for advice in the recommendation of a barrel-maker. It is at all times an invidious task to act as a selector for individuals, and to give praise to one man over another; more especially where the merits of workmen approximate near to each other. But in barrel-making, a man, to be a master of his trade, should not only be a good workman, breeching and filing well, but should possess a good eye in putting barrels together (for here everything depends upon the eye) and finishing them highly: these are only a portion of the abilities a barrel-maker should possess. Several of the London barrel-makers are exceedingly good workmen, for I have tried them all; but only converse with them, and you find the technicalities of the work is all they can discourse upon: the iron, the vital principle, is Greek to them; they know nothing about it, and care less. How can these men be guides in the right direction? They may have seen barrels welded; but, if so, it is only a matter of chance: even in Birmingham, where this can be seen daily, nineteen out of twenty know nothing theoretically. 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, and if they expect to have the job of filing the barrels, they will surely recommend you soft iron, stub-twist, or charcoal-iron.