Military industrial hegemony

Chapter 30 Limit Testing
In the last chapter we talked about sniper rifles, now let’s talk about bullets, there is a reason why Jiang Chen chose this Western-made 7.62mmX51mm bullet instead of the Soviet-style 7.62mmX39mm bullet commonly used in our country, because The 7.62mmX51mm bullet has more advantages than the Soviet-style 7.62mmX39mm bullet. The 7.62mmX51mm bullet has more charge and a heavier warhead, and it will shoot farther and more accurately under the same conditions.At that time, our country’s bullet system always followed the Soviet standard, and because our country was short of copper, we went to Africa to build railways for copper mines at that time. Everyone knows that people don’t say that we really went to build railways for the sake of it. African construction, not mutual benefit?

In order to solve this problem, steel shell steel core bullets appeared.Although this kind of bullet is very cheap, it has a fatal shortcoming. Everyone knows that the reason why copper shell bullets are used is that copper has good ductility. The wall makes the bullet shoot very accurately and far, and the steel case bullet cannot reach this point because it is an iron shell case.

The 7.62mm bullet does not mean that the diameter of the bullet body or bullet is 7.62mm, but that the caliber of the gun used with the bullet is 7.62mm, and the diameter of the bullet is slightly larger than 7.62mm. This has an exclusive The noun is called "interference", and the explanation is that the bullet is slightly squeezed and deformed to embed the rifling to achieve rifling fit and airtightness. If you have the opportunity to see the shot bullet, you will see very clear indentations on the bullet , which is caused by the extrusion of the initial rifling when the bullet is running in the barrel. The bullet body itself can form a "rifling effect", so that the bullet can produce enough self-rotation in the smoothbore, which is also unnecessary, and it will also greatly increase the speed of the bullet. Manufacturing costs, which are far less justified by the rifling of the barrel (more durable) and smooth, uniform quality bullets or de-spin stabilization mechanisms.The diameter at the bottom of the indentation is the diameter of the barrel.All rifled weapons, whether it is a gun or a rifled gun, have specially processed rifling inside the barrel, in which the spiral convex part is called male rifling, and the concave part is called female rifling.The marked diameter of all rifled weapons refers to the diameter corresponding to the male rifling in the barrel, while the diameter corresponding to the female rifling is slightly larger than the diameter value marked on the weapon. The largest diameter of the bullet bullet or shell projectile is consistent with the female rifling .

And what Jiang Chen produces is this 7.62mmX51mm copper-cased lead-covered uniform bullet. This bullet has excellent stability and is very suitable for sniper rifles. At first, the workers and leaders in the factory did not understand. To specially design and manufacture bullets, it is not very good to use our original bullets. If we have to use this kind of copper-cased bullets, the craftsmanship is so high. Now producing one such bullet is equivalent to the funds and costs required to produce ten original bullets. It's time, but under Jiang Chen's strong insistence, they are still produced, but not many, tens of thousands of rounds are used for experiments. They want to test this bullet and compare the data obtained with the original bullet to prove whether it is effective or not. this necessity.Of course, the best test results proved Jiang Chen's persistence.

The real test began. First of all, whether the gun to be tested can fire bullets smoothly, that is, the reliability. Of course, this work fell on the shoulders of Ma Jun and Dongzi. Originally, Jiang Chen opposed it. The new gun test is very important. Dangerous, although I have tried the remote safety test before, to put it bluntly, it is to pull the trigger with a wire at a distance so that no one can be hurt even if the chamber explodes.But now it’s time to go up, even if Jiang Chen is sure about these guns, but his friends and brothers go up, he will not be calm. In this case,,, Jiang Chen will feel guilty for the rest of his life, but after their persistence and The factory leaders, especially the fathers of the two, agreed and insisted. According to them, everyone is raised by their parents, and they cannot bear the danger. As factory leaders, they must lead by example, so they still let their children rush ahead. .

However, there is still the softest side in the heart of a tough guy. This is not the evening, the fathers of the two, Director Ma and Deputy Factory Director Zhang, are visiting Jiang Chen one after another, chatting about some trivial and embarrassing things about their children, such as Who broke the glass, stole the watermelon, or fought with the children, telling them about their growth, Jiang Chen persuaded them several times, but they still insisted, just kept asking about the performance of the gun, Using their knowledge to analyze the safety of this weapon, Jiang Chen can only comfort him slowly. He can't guarantee that the gun will not have any problems. This is impossible. It can only be avoided and reduced. Now everything is ready Well, it depends on God's will whether it succeeds or not.

"Are you two ready?" Jiang Chen asked in the cafeteria. The old Wangtou knew that these two people were going to test the danger of firearms, so he specially made red oily tofu nao and fried dough sticks for them. In this era, this is definitely a must. Top notch breakfast.

"Don't worry, Brother Chen, we are all ready. Don't worry, we have confidence in your gun." Dongzi said while eating the tofu nao in the bowl. This is the fifth bowl he has eaten. However, it still seemed that I was not full, so I called out to the old Wangtou again: "Uncle Wang, do you have any more, let me have another bowl!"

Jiang Chen was a little speechless, he said with black lines all over his forehead, "Eat mine, I can't finish it."

"Brother Chen, don't you want to eat?" Dongzi asked suspiciously.

"Don't eat, I can't eat." Jiang Chen has no appetite today, he really can't eat.

"Then don't waste it, it's all mine." After finishing speaking, he took Jiang Chen's share and the fritters next to Jiang Chen, and started eating nonsense again.

Ma Jun on the side didn't eat less, but he didn't have Dongzi's big bucket, so he probably ate three or four bowls. He looked at Jiang Chen with a preoccupied look and comforted him, "Chenzi, don't worry, we have something for you. confidence."

Seeing Ma Jun's sincerity, Jiang Chen nodded heavily.The test finally started. Jiang Chen and the others came to the test field. Now the entire test field has been cleaned up, but there are still some people watching from the sidelines. Jiang Chen ignored them and walked to the corresponding position.

"Are you ready?" Jiang Chen shouted.

"Get ready." On the testing ground piled up with sandbags in front, the two who were lying on their stomachs shouted loudly.

Jiang Chen looked at Chen Shijie, Director Xu Shijie, Secretary Xu Zhang, Deputy Director Ma, and other leaders. Seeing them nodding, he shouted loudly, "Start the test!"

Of the two guns here, Ma Jun and Dong Zi each took one and started shooting: Boom!Boom!Boom! ,,,,, The bullets start to shoot one after another. This work may be relatively novel at the beginning, but it will become boring later on, so that Dongzi complains, why not change it to automatic and semi-automatic? Pulling once and hitting once is too slow.Because it is a life test, the steel-cased bullets used are relatively cheap, but they are also 7.62mmX51mm bullets made according to the size of the copper-cased bullets, so as to ensure the accuracy of the test. After two days of testing, it finally followed The gunshots are done and the test is over.

The overall performance of the two guns is not bad. They fired a total of 2200 rounds each. During the test of Accurate Type 1, they jammed three times, and during the test of Accurate Type 2, they jammed twice. They reached the expected shooting standard. 2200 rounds is already a limit. Now, The rifling of the two guns has been smoothed out, so there is no point in shooting them. The other parts are in good condition and can still be used. Jiang Chen analyzed that the rifling is still a material problem, but Jiang Chen has no way to solve it now. , but this level is acceptable now. If it is replaced with copper-cased lead bullets, it should be able to reach [-] rounds, which has reached a relatively good standard.

The next step is the accuracy test of the firearms, mainly ballistic walking. This time, the specially produced copper-cased lead bullets were tested. After a series of tests, the results obtained were very good, which made everyone very excited. Leaders, down to veteran workers, these people have dealt with guns all their lives, and they never thought that the guns designed by Jiang Chen, a young man, would be so good.An interesting thing during this period is that the latter part is tested by Jiang Chen. The tests at 800 meters and 1000 meters have to consider a series of factors such as wind direction, temperature, humidity, etc. All of these need to be calculated and designed with formulas. Ma Jun and Dongzi is two big bosses. Although they have studied for several years, it is still difficult to calculate this. They can only be taught slowly in the future, so now Jiang Chen can only play in person.

The result of the test is that the best effective shooting accuracy of the Type 1 sniper rifle is 800 meters, and the best effective shooting accuracy of the Type 2 sniper rifle is 1000 meters.I won’t talk about the specific walking accuracy of the two guns. It is roughly 200cm at 2m, 500cm at 5m, 800cm at 10m, and 1000cm at 15m. Among them, Type 2 can reach 1000cm at 12m. It is advanced, and Jiang Chen is very satisfied with it. He did not expect to use a very backward method to make such a good sniper rifle. This should be attributed to the ingenuity of these workers. Jiang Chen respects it very much!

Then there are a series of extreme environmental tests, such as the hot shower test to simulate the impact of the tropical humid climate on firearms, as well as the blowing sand environment test, soaking test, and extreme cold test. This is very difficult. Jiang Chen and the others I also deliberately moved a lot of large ice cubes from the warehouse of the cold drink factory and put them in a room. I put the gun in the room for 24 hours and then fired at the shooting holes. Although it was not up to the standard of the rifle, the overall score was good.

The last item is to test the invasiveness of the fired bullet. After some gelatin soap plasticine (test three treasures, gelatin plasticine and soap!) test, the effect is still very ideal, the bullet is fired in the air It flies very smoothly, but once it hits an object, it will cause a short and rapid stall, causing the bullet to roll in the body, causing great damage. This is the lethality.Finally, at the end of the preparation, someone proposed to test it with a living body. Of course, this is also a test that is very close to actual combat. Jiang Chen and the leaders agreed.

After searching and searching, I found two pigs raised by Lao Wangtou in the cafeteria. These two pigs were about to be slaughtered, and finally persuaded the tearful Lao Wangtou, Dongzi and Fatty, who looked like little devils who went to the village to sweep One person rushed over and tied the pigs to a distance of more than 400 meters for testing. The distance between the two pigs was more than 50 meters. This was to reduce the shock of shooting the other pig.After everything was ready, Dongzi and Ma Jun began to prepare to shoot, while some people who didn't know the truth were watching this kind of pig killing, which had never been heard before, and Jiang Chen hid far away early in the morning, so he knew what it was like.Dongzi is a two hundred and five, shoot first, boom!I saw the head of a pig over there exploded, and Dongzi jumped up happily. The pig on the side became irritated after being frightened and started to grab the rope and run around. After all, Ma Jun was a soldier and his marksmanship is good. He picked the right moment to shoot, boom!The irritable pig also fell down.

"Headshot" I believe that many comrades are familiar with the name of headshot. Everyone has heard of it. The specifics are like this. When a bullet shoots at the human head at high speed, it must pass through the bone, that is, the skull.The skull was shattered by high-speed bullets into numerous bone fragments, just like the explosion of a single shell formed countless fragments, and the fragments flew in the skull to form 2 kills.Since there is a large amount of soft tissue and cerebrospinal fluid in the skull, in layman's terms, there is still brain matter.Then the bullet will also form a tension effect.Thirdly, there is pressure inside the skull. Although the level of intracranial pressure is determined by the environment and individual conditions, there must be a pressure difference with the outside world.Once the bullet penetrates, the intracranial pressure changes rapidly, and the intracranial tissue fluid will splash out.Form the so-called headshot effect.

But this cleanup process is very painful. Seeing Dongzi and Ma Jun showing off their marksmanship with embarrassing faces, Jiang Chen was very funny. He thought about it and said, "Why are you so happy, hurry up and clean up the pigs. It's too hot to deal with it quickly!"

It was said that several experienced old leaders, especially the deputy factory director Zhang who had been a soldier, became unfriendly when they saw Jiang Chen's eyes, but he didn't object and just looked at Dongzi's happy look and smiled wryly.Dongzi and Ma Junzheng went happily without paying attention, and what they ate this morning was red oil tofu nao, so one can imagine how they came back.

Because of these two pigs and the test work these days, the meals provided in the factory cafeteria are very good, such as braised pork, pork ribs with sauce, and all the personnel participating in the test can eat in the cafeteria.Dongzi, Ma Jun, and a few helpers ran out again covering their mouths when they saw the food served.

Jiang Chen gnawed on the ribs and said, "This is No. 11 times, so you can't be promising!"

Everyone at the same table had black lines on their foreheads: ",,,,,,"

PS: Many people are asking why I update it every day. I really want to say that there are some texts recently, and the code words are not very smooth, so I can only guarantee one update!But I will work hard and strive for two updates as soon as possible!Looking forward to the third watch!Hope everyone supports!Are you satisfied with today's chapter?According to the standards of the two thousand parties, there are almost two changes. Let's not make a fool of ourselves, just come here once, everyone is satisfied, this is also a thank you for your support! !Do you guys enjoy it?Cool to collect it!Let's smash all the tickets!

(End of this chapter)