Lunch was ordinary, except that the important side dish of the meal was stewed potatoes. It was made by two women in the design bureau, one of whom was the wife of the director. The meal was plain but it was of great significance.
Furthermore, Anne is indeed an excellent cook. Except that the brown bread is provided by the cafeteria of the Academy of Sciences, the two large pots of potato stew are indeed cooked by her, and the taste is much better than that in the cafeteria.
Lunch time was very short, and Yang Mingzhi knew that he still had important things to do in the afternoon. After coaxing his wife, who had been busy all morning, to take a nap, Yang Mingzhi immediately stood in the big office and gathered all the design bureaus together.
.
Everyone moved benches and sat in two rows, staring directly at the commander who stood like a mountain with their eyes, and gave orders after listening.
Everyone is also looking forward to it. They just want to know what happened to the director at the military region headquarters. The director didn't come back all night. He was probably holding a meeting with people from the military region overnight. Everything was about the production of firearms. This must be the case.
.
Yang Mingzhi, who had changed into casual clothes, glanced around: "Everyone is here. Don't look at me like that. I know what you are all thinking."
Popov stood up without any surprise: "Director, please tell us, what major events did you decide on when you had a drink with the commander of the military region yesterday?"
"Big deal? What else can there be? The commander of the military region told me that he attaches great importance to our design. The current situation is that a large number of reports will be sent to Moscow quickly, and Comrade Stalin will also quickly know what we are doing. What is certain is that
, our results will be recognized.”
At this point, everyone's suppressed emotions finally broke out. The quiet people started talking, the quiet office became lively, and everyone's face was filled with happy and victorious smiles.
"Everyone be quiet!" Yang Mingzhi clapped his hands fiercely, "Comrades, we have won the favor of all senior officers in the military region headquarters through a successful experiment. We cannot relax at all next. There are still more things waiting for us.
More difficult work! I tell you, the time given to us is very tight, we must seize the time to come up with a better design. Now let us start working!”
Yang Mingzhi does not want to say any more slogans, and pragmatic work must start now.
He turned to look at Popov and asked: "Did you do all the tasks I gave you yesterday?"
"I've finished it." As he said, Popov pointed to a large wooden table not far away: "You asked us to disassemble the ten sample guns, except for the riveted integral parts, which we cannot dismantle.
, the firearm can no longer be disassembled and is just waiting for your inspection."
"Well done, let me go and have a look!"
When an assault rifle is used continuously and intensively, serious wear and tear is inevitable. As long as this wear and tear is acceptable, the firearm can continue to fight.
He quickly leaned in front of the huge desk, with the incandescent lights around him bright, so that he could clearly see the current status of all the parts.
Ten assault rifles are arranged in a matrix of parts status. There is always anti-corrosion lubricating oil on the parts. Even after use, part of the gun oil is still attached, so it still shines under the light.
There is only one gun among them, and its situation is the most special. The barrel of the gun is actually reflecting the orchid light.
Yang Mingzhi raised his hand: "Popov, that gun, we fired three thousand rounds with it yesterday?"
"Yes, Commander."
"Bring me the barrel of the gun."
Popov did as he was told, but the old guy looked a little embarrassed, which was noticed by the keen Yang Mingzhi.
"What's wrong? Are you worried about something? About the barrel?!"
As Yang Mingzhi took over the barrel welded to half of the gas pipe, Popov spoke again: "Director, most of these firearms are intact, except this one. In just two hours, it was
Three thousand rounds of ammunition were fired, and the cooling method was violent quenching. The barrel of the gun..."
"Is there a problem?"
"Yeah, some bad questions."
"Let me take a look." As he spoke, Yang Mingzhi aimed the barrel at a light bulb and peered into the barrel with his left eye. "Wait! Popov, you said there is something wrong with the barrel? I didn't find any obvious problems.
.”
"It's a rifling problem."
After hearing what he said, Yang Mingzhi concentrated his attention and seemed to really notice something strange.
It's just that the inner diameter of the barrel is slightly smaller than 7.62 mm, so that the bullet can stick to the rifling but can still come out of the chamber smoothly. Today's firearms are basically designed like this to ensure perfect air tightness.
This type of design has a long history, and it can even be traced back to the earliest rifled matchlocks in the fifteenth century.
Of course, while such a design gives the firearm a huge tactical advantage, it also brings a disgusting maintenance trouble.
Yang Mingzhi looked at his little finger. It was too difficult for him to put his little finger into the barrel of the gun. After much deliberation, he probably had to use his wife's little finger.
"Popov, find me a small piece of white cloth and hand me the strip."
There is a purge bar inserted under the barrel of each Mosin Nagant. It is also a thing that has been used since ancient times. It is only used to maintain firearms for soldiers. Yang Mingzhi's assault rifle also temporarily uses this shot to facilitate maintenance.
The barrel of the assault rifle is short, and the purge bar is also short. The steel purge bar is connected with a piece of white cloth and is inserted directly into the muzzle of the gun. The white cloth is kept stuck until it is poked out from the other end. But the white cloth appears in front of everyone again, and it has already
It's completely black cloth.
Seeing this situation, Popov couldn't wait any longer.
"Director, this is also the case with other firearms. There are some residues hidden in the rifling."
Yang Mingzhi frowned. It was not surprising that the white cloth turned into black cloth. But after a series of shootings, one of the subsequent maintenance tasks was to wipe the barrel clean. This work Yang Mingzhi was very familiar with, including
When I was a soldier in that plane, the smokeless gunpowder of that era was already very advanced. Even so, after shooting range training or military exercises, every soldier still had to clean the barrel of the gun with great effort, and the officer would personally check it. If any gunpowder was found
If there are impurities, it is necessary to write an inspection.
"It is acceptable to have residue, although... although it is indeed a bit exaggerated to turn white cloth into black cloth." Yang Mingzhi shrugged, "At least in yesterday's experiment, the gunpowder residue in the barrel did not affect our shooting."
Popov also frowned: "Director, let me tell you the truth, we have wiped this gun once. There are so many residues on it that the entire rifling is blocked."
"What?" Yang Mingzhi understood instantly and turned around: "Popov, I told you yesterday that it is enough to dismantle all firearms into parts, and the rest is superfluous."
"But……"
Popov did indeed do unnecessary things, just because these firearms stole the show in the test. In the eyes of others, the new guns are amazing. It may have shortcomings, but they are trivial.
The ten guns on the shooting range miraculously did not have any malfunctions. However, when they were brought back and just "cut into pieces", the bad condition inside was already exposed.
Popov told the truth, he did clean up the gun that had 3,000 rounds of ammunition, just to cover up the worst side and reassure the director.
The director was standing here. Forced to press, Popov could only tell the truth.
"We fired three thousand rounds with it, and it was directly quenched and water-cooled during the process. The gunpowder residue in the gun and barrel was mixed with water and gun oil. We did not clean it further after the experiment. Now these substances are fully mixed.
A thick sludge was formed. We... we did some cleaning at the first time, but even so, as you can see, there are still a lot of impurities."
"You..." After hearing this, Yang Mingzhi really wanted to criticize Popov, who was good at making opinions. Now that the deal was done, criticism was meaningless. "Popov, you should realize that you did something wrong. Okay.
Your cleaning was not sufficient, and the sludge in the gun chamber was not cleaned out."
"It's not easy to clean."
"Ah? Because it's hard to clean up, you left some residue for me? You..."
Originally, Popov was already fifty years old, and he had suffered twice as much as him. Yang Mingzhi felt that he should not criticize such an uncle. But when he heard the reason why the cleanup was not completed, his anger rose again.
Just like that, Yang Mingzhi finally scolded Sukabule in front of everyone, regardless of Popov's face.
Popov is not angry, really. If he had known this, he should not have acted on his own last night. The sludge impurities blocking the gun barrel might as well have been blocked there. Although the director looked upset, he would not have done it himself.
I was scolded for my age.
However, when Popov was cleaning it, he basically understood the reason why some impurities could not be removed because the rifling was worn and deformed.
Yes, the chrome-plated barrel is indeed stronger, but who would use a personal weapon as a light machine gun? No! Yesterday’s performance at the test site showed that the shooter operated it with the same mentality as a water-cooled Maxim, and the firearm did not explode into pieces.
It's all a miracle.
The rifling was scratched crazily by the bullet, and the inner diameter had expanded beyond the tolerance. In a sense, this gun had been scrapped as early as the test site. Just because it could continue to fire, of course, if it were to be used in actual combat, its performance would be
is bad.
The inner diameter of the barrel is already larger than the caliber of the bullet, and impurities have accumulated in the negative lines of the rifling. Due to the continuous firing under high temperatures, the rifling itself has been shortened and slightly deformed. Neither Yang Mingzhi nor Popov have precision tools now.
In fact, the barrel itself has been bent to a certain extent, but the degree of bending can only be detected with instruments. Now the bullet can still be fired relatively normally. At least no one at the test site has discovered this problem.
However, if there is a laser aligner, the deformation of the barrel will be revealed immediately.
There was basically no fact that the barrel was deformed. Yang Mingzhi could also determine that it was scrapped based on the rifling problem of the barrel.
Using some tools at hand, Yang Mingzhi determined the fact that it was scrapped.
As it was, he did not sigh in peace.
"The situation is indeed a bit bad, but no one is like us, trying out a new gun with the mentality of operating a heavy machine gun. It's a miracle that it doesn't melt into molten iron at high temperatures."
It seems that this is a gratifying praise? Popov's mood has improved a lot. It was originally like this. Even if the bullets of the assault rifle are smaller, a soldier carrying 300 rounds of ammunition on the battlefield is enough to make people breathless. Besides, the equipment is 300 rounds.
What fool would shoot all the bullets in a few hours? No! The soldier might save a week.
Given this situation, the rate of fire of any automatic firearm can be divided into two categories: theoretical rate of fire and actual rate of fire.
For example, the German mg34 has a firing rate of more than 1,500 rounds per minute on the shooting range. What about the actual combat firing rate? Excellent shooters can control it at 600 rounds per minute. Even so, it still feels too fast.
Therefore, the Soviet Maxim machine gunners have been committed to controlling the rate of fire to 300 rounds per minute, thereby reducing the pressure on logistics.
Yang Mingzhi inspected the barrels of the ten assault rifles one by one, and the results were quite gratifying. Except for the most "model worker", the parts of the other firearms were in normal condition, even the most disgusting barrel impurities.
No worse than Mosin-Nagant after the battle.
This reminded Yang Mingzhi of something.
"The amount of residue in the barrel is of course related to the frequency of use of the firearm, but also to the gunpowder in the bullet. The production results of the local bullet factory in Novosibirsk are already very gratifying. Popov, we are in the swamp
Those bullets made by the earth are terrible."
Popov chuckled: "Indeed, we use reloaded SVT40. After every battle, cleaning the barrel and barrel is a chore. Our self-produced black powder has low energy and low chamber pressure. Maybe
That power is not as powerful as our current assault rifles. Not only that, every time it is fired, the smoke produced is too great, and the shooter's position is often directly exposed."
"Mosin Nagant is in mass production, and the corresponding bullets are also in mass production. There are still impurities after the gunpowder is burned, but they are at least smokeless gunpowder, and the smoke and dust are low enough. It's not like we are in the swamp. It's really no recoil.
Cannons were once the backbone of our army, but the way they fired looked like the Armstrong cannons of the 18th century."
The director used a strange word to describe the outstanding recoilless rifle, which also reminded Popov of the difficult years.
Although I had only left the swamp for less than a month, I felt like I was in a new world. There was no war here and the living conditions were much better.
How are the comrades who stayed behind doing well? Is the enemy planning a new encirclement and suppression campaign? How has the combat effectiveness of the troops been restored?
Popov really wants to know how the army is under Yevlov's rule. He is inevitably worried. Without the God of War version of General Berekov, the situation may be a little worse.
Now, General Berekov is standing here as a director, commenting on the parts.
According to his claim, leading soldiers in war is just a helpless side job, and making weapons is his true job.
This statement was completely incomprehensible at the time, but based on the current situation, the director's words are correct.
Yang Mingzhi's most detailed inspection of the new gun took a lot of time, and the work came to an end only after the sun had completely set.
The size of each part was accurately measured using the spiral micrometer of the vernier caliper. After some measurements, it was discovered that only the inner diameter of the barrel that had been fired for 3,000 rounds had expanded to 7.85 mm! It seemed like the change was only 0.2 mm, but seriously
Strictly speaking, the barrel of the gun has become a "smooth bore".