Chapter 373 (1/2)

It is not difficult to make up for these two defects of Dreiser rifle.

The first thing to change is to fix the paper shell ammunition.

This kind of fixed charge paper shell ammunition invented by Dreiser, the primary explosive, that is, the fire cap, is installed behind the rear of the warhead and on the top of the head of the propellant.

Although the bullets of modern rifles used fixed metal ammunition, the principle is the same as that of fixed paper shell ammunition.

When the propellant in the cartridge case is ignited by the fire cap, the explosive will shoot the warhead out, so as to complete a firing.

It is also such a process to complete one shot of fixed loading paper shell ammunition.

The difference between the two bullets is the material of the case.

However, no matter what kind of ammunition is, it must be ignited by the firing cap. However, for the bullets used in modern rifles, the fire cap is at the bottom of the cartridge case. The paper shell bullet developed by Dreiser has a cap between the propellant and the warhead.

In modern bullets, when the needle hits the cap at the bottom of the bullet, the propellant will explode in the cartridge case, which has no effect on the needle. For this paper shell bullet developed by Dreiser, the front end of the needle needs to pass through the front end of the propellant to hit the fire cap. That is to say, after the paper shell bullet's propellant is detonated, the first one to be damaged by the propellant deflagration is the firing pin.

Such a thick barrel can't resist the high temperature and pressure produced by the deflagration of propellant, let alone a very thin needle.

Therefore, in order to make up for this defect, the first thing to change is the design of paper shell bullet.

With the technical strength of this era, it is impossible to produce copper shell bullet or copper clad steel bullet. In fact, even in the 21st century, there are less than 30 countries in the world that can produce copper bullets. There are only 13 countries that can produce shells and bullets at the same time!

So it's not so easy to get a bullet with a metal case. Shi Xiong suspects that he can't produce bullets with metal shells even if he can make antiaircraft guns

Although this is a bit exaggerated, there is no doubt that the production of metal cartridge case bullets is absolutely impossible in this era. Then, the production of paper cartridge case bullets is necessary.

Compared with metal cartridge case, the production process of paper cartridge case is not so difficult. The bottom is inlaid with a hard paper cylinder of a fire cap, and the charge is fixed. A round cylindrical lead bullet is inserted in the front, and a paper shell bullet is completed. Even if it's done by hand, a person can make a lot of bullets a day.

If you use the rotary back pull gun, because of the problem of processing technology, the tightness of the gun produced at the beginning is not very good, but it is much better than that of the rotary locking mechanism of Ferguson rifle.

In this way, the amount of powder to be loaded will be reduced a lot.

In the past, when using the San Etienne rifle captured from the French, because the French black powder ratio was not quite correct, the amount of propellant required for each bullet was about 123 grains, that is, about 8 grams. Now the Ferguson rifle used by the expeditionary army uses perfect formula black powder as propellant, so the amount of propellant per bullet is about 100 grains, about 6.5 grams.

If you use a rifle with a rotary back-pull gun, the amount of propellant contained in the paper cartridge case of each bullet can be reduced to 70 grains, or about 4.55 grams!

This charge is 30% less than that of Ferguson's rifle, but the effective range of the bullet is tripled!

This is the result of technological progress.