Logically, the shooting test of tank guns cannot be done like this, and it must start step by step from the most basic shooting experiment.

However, 404 doesn’t have so much time to wait for the long experiment process.

In addition, 404 has the right to establish projects independently, and in terms of experiments, no one will say anything even if it does not comply with the rules.

The military doesn't care at all.

As long as the result.

Now, it will be decided whether the entire project can complete the production of the prototype car within the originally expected time.

Who is not nervous?

"Huh? Why are the Iranians coming!" Seeing that the preparations were about to be completed, Xie Kai heard the sound of the car engine coming from behind, turned his head to look, and the Iranians came too.

The Iraqis also discovered the Iranians who got off the bus. Both sides discovered each other, and no one spoke again. They looked angry and wanted to kill each other.

"Damn it, they are everywhere!" Ibrahim cursed in a low voice.

But Isad and others didn't say anything.

The Iranians did not say anything to the Iraqis. After greeting Zheng Yucheng and others, they kept a distance from the Iraqis between them.

Both sides tacitly approached the tank guns installed on the test bench in front.

"Chief, the shooting experiment is ready, please give me instructions!" I don't know whether it was the garrison regiment or the cadres of the internal guards of the base reported to Qin Jinyuan after the tank guns and the target were ready.

"Let's start." Qin Jinyuan looked at Zheng Yucheng, who nodded. Even though he was nervous, he knew that he could not delay.

The ugly daughter-in-law will have to meet her parents-in-law sooner or later, but this time the test shot is too important.

Both potential big clients are here.

"Didi..." The commander blew the whistle in his mouth, and the little red flag in his hand began to wave, and the soldiers guarding behind the tank guns were starting to load the bullets by hand.

The huge shell up to 70 mm was held by the test-firing loading hands and stuffed into the inside of the barrel.

After the shell is in the chamber, the blasting bolt is manually closed and locked. The loading hand is pulled back to the back, and the operator shakes the handle next to it to adjust the height of the muzzle. According to the design elements reported by the commander, the muzzle is adjusted and the target plate is directly aimed at the target plate two thousand meters away.

After aiming, I checked it repeatedly before retreating to the back.

Although it is loaded manually, tank guns are different from howitzers. The launch device does not require people to pull the iron to hit the bottom of the shell, but instead uses electric shock to fire the shells.

The test platform has wires connected to the operating table that is about ten meters behind. Just press the firing button at the back and the shells in the barrel will open fire.

The tank gun used for the test is installed on the artillery bracket, with an anti-rear seat device composed of a stationary and retreating aircraft and a return aircraft behind it, and even a dangerous plate used to protect the operators when the artillery is fired. No one dares to ensure that the test process is not unexpected.

"Isn't there an automatic loading mechanism?" Yihaul asked Wang Guilin next to him in confusion.

"Now we are testing the performance of tank guns and shells, and the test needs to be done step by step!" Zheng Yucheng's explanation was translated into Arabic and Persian. "At the same time, the automatic loading machine needs to be tested on the sample car. After all, the automatic loading of tanks is different from the manual loading used now. The fuses and launching drugs of the shells are separated. Of course, such tests will definitely be conducted later!"

Automatic loading, this is determined from the beginning of the 359 tank.

Otherwise, the shells would not have been manufactured to a length of 0.7 meters.

The 359 tank is originally a modification of the 59 tank, and the chassis is not large and the space will naturally not be too much.

In addition to the domestic t72 automatic loading machine technology, the length of the loading machine's bomb bay is limited, and no shell can exceed 0.7 meters.

The longer the shell, the more launching medicine it can hold, and the higher the initial muzzle speed it can provide.

Germany, France and other countries have a shell length of about one meter, so they can naturally provide a higher initial speed when they are out of the cavity.

"No. 1 gun position, 2000 meters, 350 mm homogeneous armor No. 1 target plate, No. 3 armor-piercing projectile, fire!"

With the commander's death, the launcher behind the No. 1 gun position, who was ready, pressed the launch button.

"boom!"

A ball of fire flashed at the thick muzzle, and then a huge roar sounded. The barrel retreated to the back as soon as the gunboat was ejected. Under the action of the re-entry aircraft and the retreat aircraft, even though a large part of the recoil was eliminated, the people standing more than 20 meters behind the gun position still felt a vibration from the ground.

At this time, I didn't care, and everyone was holding the telescope and looking at the target board two thousand meters away.

This is the first shell of the 125mm tank gun.

Xie Kai also held a military telescope and installed a speedometer on the muzzle. Even a remote air defense radar car was turned on to measure the speed of the cannon ejection...

After the sharp armor-piercing bomb was released, the bullet holder outside spreads to the back, drops to the place, and flies at a high speed towards the target two thousand meters away at a speed invisible to the naked eye.

"Swisher~"

The naked eye could not see the movement of the shells clearly, leaving only a shrill and sharp sound of breaking through the air.

"Bang!"

The armor-piercing bomb hit the target in the distance.

"Stable shell-unshed armor-piercing bomb?" Yihall was aware of the goods and asked inexplicably at Zheng Yucheng next to him.

Zheng Yucheng nodded, "It must be tested for armor-piercing bombs, right? This kind of charge should be less. The full charge of killer and blasting grenade chamber pressure is higher..."

According to the tank gun test plan, these tank guns will conduct step-by-step experiments based on armor-piercing bombs, anti-destructive blasting bombs, armor-piercing bombs, etc.

The Iraqis were a little moved on the side.

Especially Isad, the tail stable shell-out armor-piercing bomb is the most advanced armor-piercing bomb, and they can't do it at all.

The Chinese experimented with this shell in front of them as soon as they came up, and their intentions were naturally obvious.

"No. 2 gun position, 2000 meters, 350 mm homogeneous armored target plate No. 21, No. 3 armor-piercing projectile, fire!"

"boom!"

A ball of fire flashed larger than that of the No. 1 gun position, and the entire barrel vibrated.

Everyone watching frowned immediately.

Xie Kai's heart even tightened.

The gun at the No. 2 gun position has a muzzle retractor!

Although after the bore was released, the support outside the armor-piercing bomb was separated, and the sound of the armor-piercing bomb cutting through the sky was far less sharp than the first one.

"It's off the target!" Long Yaohua said with some regret.

Yes, this armor-piercing projectile still off the target even though it aimed at the target board.

The whole scene was banned for a while.

"Continue to test the firing, and the problem of retracting the gun at the muzzle!" Qin Jinyuan had already prepared for this situation.

The muzzle retractor has an impact on the stable shell-out armor-piercing projectile at the tail wing. In fact, everyone knows this in their minds, but the muzzle retractor can reduce recoil by at least 40%, and such performance is very attractive.

The tank gun of the 359 tank will adopt the best solution obtained after firing tests.

"The muzzle retractor, can't I really fit this thing?" Xie Kai was speechless.

He knew better than anyone else that in the advanced main battle tanks behind, no tank gun was equipped with a muzzle retractor.

There are no Chinese 99s, Russian T14s, American Imperial M1 series, German Leopard 2s, etc., no one has installed a retractor.

The reason why Xie Kai did not stop this plan is because China has just obtained the technology of stably dehulling armor-piercing bombs in the tail wing and does not know enough. The muzzle retractor is too powerful to weaken the recoil. This makes it necessary to conduct such experiments.

Even make improvements.

Once the expectations are met, the chamber pressure of the tank gun will be further increased.

Neither the Iraqis nor the Iranians have any indication.

The testers at the base were a little nervous.

However, the three guns behind were still starting the first gun.

Another tank gun equipped with different muzzle retractors did not fall off the target, but in the final result, it did not penetrate the target with a 350mm homogeneous armor!

"Record the data and continue to load!" Qin Jinyuan asked Zheng Yucheng and others, and was instructed to continue the test shot.

It is still an armor-piercing bomb, but the thickness of the homogeneous armor begins to increase.

Each target is incremented at a thickness of 50 mm.

It has been impenetrable and then remade the target for experiments.

"boom!"

"boom!"

In order to obtain more data from the newly developed 125mm tank gun, the base test fire did not use the angle to tilt the steel plate to make theoretical speculation, but instead used a whole piece of thick steel to install it on the base below for more accurate data.

Until the 500mm homogeneous armor, three tank guns without muzzle retractors were barely penetrated.

By 550 mm, it is no longer completely penetrated.

"Replace the composite armor target!"

There were enough targets prepared before, and the live-fire test will start until the entire barrel will have problems.

"Director Zheng, it's not possible today. You must pull the cannons back for testing. If there is no problem, then it will be carried out..." Without a few shots, Qin Jinyuan did not dare to be careless.

Zheng Yucheng didn't force it either.

Compared with the 105mm rifled gun that can only penetrate 350mm thick homogeneous armor, the armor-piercing ability of the 125mm tank gun has been greatly improved.

"Computer simulation analysis, if the length of 52 times the diameter tube is used, how much will the armor-piercing ability be improved?" Xie Kai asked.

"This is already very excellent!" Qin Jinyuan looked at Xie Kai, a little confused about his meaning.

How could he know that Xie Kai was not satisfied with the thickness of armor piercing only over 500 mm?

The 125mm tank gun above the 99a has a armor thickness of more than 1,000 mm!

"We still have great potential to dig, whether it is the material of armor-piercing shells, the artillery barrels, the amount of shells loading, etc., it can be effectively improved..." Wang Guilin comforted Xie Kai, "Compared with domestic tank guns, this performance is already very excellent."
Chapter completed!