The Life of a Gangster That Started In a Gun Shop

For the time being, let’s not think about the problem of definition. After all, the rate of fire of the submachine gun is matched with the full-power rifle bullet of the short assault rifle. Such a grotesque weapon can be said to have opened a new river of weapon design.

The question now is how to increase the rate of fire as much as possible while determining the use of full-power rifle cartridges!

Before thinking about this problem, you must first clear why submachine guns use pistol cartridges instead of rifle cartridges!

Ye Qing couldn't believe that with so many people in the world and so many weapon designers, only his own mind came to this point. But why, no one does this?

It is not difficult to understand this problem, after so long in the system training field. Ye Qing has roughly understood the reason, and now it is nothing more than subdivided and listed, and then find the key points for targeted treatment.

The first is the automated structure of the submachine gun. Most of the submachine guns, mentioned above, use a free-style bolt structure, or a semi-free-style bolt structure.

This structure is just like its name, the bolt is free and unconstrained. So what is unconstrained? !

The answer is the "lock" in the locking mechanism!

Being locked is naturally restricted. The so-called unrestricted, that is, the bolt is closed but not locked!

The process of locking is reduced, and there is one less procedure in the entire automation process. This is the first position to reduce automated process time and increase the rate of fire.

In addition, when it comes to the structure of the free-style bolt, there are some features of it that need to be talked about.

The first is the first point. How to judge whether a gun is a free-style bolt structure can be seen by looking at its bullet length ratio. Since the free-style bolt structure has no locking mechanism, the three points of bolt, bullet and recoil spring are quite demanding...

Usually, the long diameter of the ammunition is relatively small, and the external performance is that the bullet is short and thick. This can ensure that there is enough recoil energy while reducing the friction between the shell and the chamber.

Obviously, at this point, full-power rifle cartridges do not meet the definition of short-term rental. This is the first difference. After Ye Qing wrote down the features, he added a special note to distinguish them.

The second point is that the time for the chamber pressure to reach the peak value should not be too long, and the time curve of the sub-bore ejection should not be too long. In other words, be fast!

When the trigger is pulled, the bullet must fly out of the barrel quickly. Once the bullet stays in the barrel for too long, the time in the chamber to return to safe chamber pressure will be prolonged. It can easily lead to explosions, etc...

The reasons why the chamber pressure is likely to be too high have been explained in the first point. It is also because of this feature that most submachine guns have short barrels...

Ye Qing has every reason to believe that this was not intentional by the earliest firearm designers. It is very likely that after figuring out the structure of the free-style bolt, the barrel has to be shortened.

It turns out, eh! This thing seems to be quite suitable for street fighting? !

There's not much to say about this, anyway, Ye Qing didn't prepare the whole very long close-range weapon. There is no effect on the label, continue to see the next point;

The third point is that the mass of the bolt is proportional to the chamber pressure curve and the movement assembly.

The cancellation of the locking mechanism does not mean that the bullet does not need to be locked, in the absence of a locking mechanism. If you want to complete the qualified locking, you can only rely on the bolt itself to complete it!

Then the problem arises. The higher the chamber pressure, the higher the explosive power of the bullet. In order to resist this high burst and prevent the bolt from starting to recoil when the bullet has not yet been discharged, resulting in the energy loss of the bullet in the chamber, it is necessary to improve the quality of the bolt to resist this backward high air pressure .

The same goes for the total distance, but this is okay.

Ye Qing thought about it, although the rifle bullet was bigger, but due to the aspect ratio, the instantaneous chamber pressure was better. Because the gunpowder in the medicine chamber is gradually burned, not all at once.

Instead of considering the problem of chamber pressure, it is better to consider whether the difference in gunpowder combustion of rifle bullets will lead to insufficient recovery energy...

This is obviously more reliable!

Article 4, recoil spring...

The recoil spring force tends to be larger for guns with a free-style bolt structure. This can help reduce the mass of the bolt and reduce the weight of the whole gun. The larger recoil spring force can also make the bolt reset faster, thereby increasing the rate of fire.

The high rate of fire of the submachine gun is due to the recoil spring!

However, the excessive force of the recoil spring also has negative effects. The most intuitive feeling may be that it is very laborious to load, and at the same time, the coordination is not good, mistakes occur, and it may also lead to the phenomenon that the recovery is not in place.

The main way to deal with this is to calculate and measure...

If you really want to make this gun, the process of repeatedly testing the most suitable recoil spring force and bolt quality is essential.

Article 5, bullets...

From the previous summary, we can basically see a vague concept. The so-called free-style bolt structure is actually a powerful flying brick...

High chamber pressure of bullets, heavier bolt action, greater recoil spring force...

It's like you go to the gym and want to hit the strength training area. As a result, I saw that it was full of muscular men. If you have no flesh all over your body, I am afraid you are too embarrassed to go in...

Bullet is such a dude caught in the middle of the muscular guys.

In order for it to successfully gain a firm foothold in the strong structure, correspondingly, the shell strength and the shell friction coefficient have higher requirements.

Take the case strength as an example, if the case strength is not enough. In this repeated torment, it is not impossible that the shell is broken, the recovery is not in place, and it is even possible that the air leaks and explodes...

But for Ye Qing, this was the easiest solution.

As long as you get the strength of the shell and improve the coefficient of friction, these new material systems can definitely be found in the mall.

The crux of the problem lies in the previous points.

The most important thing is the aspect ratio of the full power rifle bullet...

Rifle cartridges are usually thin and long~www.wuxiaspot.com~, which causes its chamber to be slender as well. Since the primer fire is ignited, only the lower part of the medicine chamber can be ignited at the beginning, and then slowly burn up.

The instantaneous chamber pressure is reduced, and the consequences are also mentioned earlier. The recoil energy may not be enough, and the bullet stays in the chamber for too long..

In this case, the rate of fire is also affected.

Maybe one bullet isn't obvious, but what about thirty?

Thinking that the 30 rounds of the vector only need a firing speed of 1.5 seconds, if this speed is too slow, then Ye Qing will lose the meaning of developing this gun.

To solve this problem is easier said than done, difficult to say...

It's easy. Naturally, it is to find a suitable new gunpowder formula in the system mall to speed up the burning speed of the gunpowder in the medicine chamber. It is best to achieve synchronous combustion.

Ye Qing believed that there was definitely something like this in the system mall.

But the difficulty, and the point that makes Ye Qing the most fearful, is also here...