It stands to reason that the firing test of a tank gun cannot be carried out in this way, and it must start with the most basic firing experiment step by step.

However, 404 didn't have that much time to wait for the long testing process.

In addition, 404 has the right to initiate projects independently, and in the test, even if it does not comply with the rules, no one says anything.

The military simply won't care.

As long as it turns out.

It was now up to the decision to determine whether the entire project would be able to complete the production of the prototype at the originally anticipated timeframe.

Who doesn't get worried?

"Huh, why are the Iranians here!" Seeing that the preparations were about to be completed, Xie Kai heard the sound of the car engine coming from behind, and turned his head to see that the Iranians had actually come.

The Iraqis also spotted the Iranians who got out of the car, and both found each other, and neither spoke again, their angry eyes eager to kill the other.

"Damn, they're everywhere!" Ibrahim cursed in a low voice.

Isad and others did not say anything.

The Iranians did not say anything to the Iraqis, and after greeting Zheng Yucheng and others, they kept a distance from the Iraqis through Zheng Yucheng and others in the middle.

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

"Chief, the shooting experiment is ready, please instruct!" I don't know if it was the cadres of the garrison regiment or the base guard who reported to Qin Jinyuan after the tank gun and target were ready.

"Let's get started. Qin Jinyuan looked at Zheng Yucheng, who nodded, Rao was worried in his heart, but he also knew that he couldn't delay it.

The ugly daughter-in-law has to see her in-laws sooner or later, but this test shot has too much to do with it.

Two potential big customers are here.

The artillery commander under the command of the "Didi ......" blew the whistle in his mouth, and the small red flag in his hand began to wave, and the soldiers guarding behind the tank gun began to reload by hand.

A huge shell up to 70 mm in length was held by a test-fired loader and stuffed into the chamber of the gun.

After the shell is loaded, the bolt is manually closed and locked, the loader retreats to the back, and the operator shakes the handle used to adjust the muzzle next to it, and according to the design reported by the commander, Zhuyuan begins to adjust the muzzle, and directly aims at the target plate two kilometers away.

After aiming, after repeated checks, he stepped back behind.

Unlike howitzers, tank guns do not need to be pulled by a person to hit the primer of the projectile, but instead use an electric shock to fire the projectile.

There are wires on the test platform connected to the operating table that is transported more than ten meters behind, and you only need to press the launch button at the back, and the shells in the gun chamber will fire.

The tank gun used in the test is mounted on the artillery mount, and there is an anti-recoil device composed of a stationing and retreating machine and a reentry machine behind it, and even a precautionary plate used to protect the operator when the gun is fired, so no one dares to ensure that there will be no accidents during the test.

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

"Now it's time to test the performance of tank guns and shells, and the test needs to be done step by step!" Zheng Yucheng's explanation, translated into Arabic and Persian. "At the same time, the automatic loader needs to be tested on a prototype, after all, the automatic loading of tanks is different from the manual loading used today, and the fuse of the shell and the propellant are separated. Of course, such an experiment will definitely be carried out later!"

Self-loading, which was determined by the 359 tank from the very beginning.

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

The 359 tank was originally a modification of the 59 tank, and the chassis was not large, so the space was naturally not too much.

Coupled with the T72 automatic loader technology obtained in China, the length of the bomb bay of the loader is limited, and any shell cannot exceed 0.7 meters.

The longer the shell, the more propellant it can load, and the higher the muzzle velocity it can provide.

Germany, France, etc., has a shell length of about one meter, which naturally provides a higher muzzle velocity when discharged.

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

With the command staff's life, the firing crew, who was already ready behind the No. 1 gun position, pressed the firing button.

"Boom!"

A ball of fire flashed at the thick muzzle, and then a huge roar sounded, and the barrel of the gun retreated to the back at the moment when the gun was discharged, and under the action of the re-entry machine and the stationing machine, even if a large part of the recoil was eliminated, the people standing more than 20 meters behind the gun position still felt the vibration from the ground.

At this time, they didn't care, everyone was holding a telescope and looking at the target at a distance of two kilometers.

This was the first shell of a 125-mm tank gun.

Xie Kai was also holding a military telescope, a speedometer was installed on the muzzle of the gun, and even an air defense radar car was turned on in the distance to measure the speed of the gun ejection......

After the sharp armor-piercing projectile is discharged, the outer butt unfolds backwards, falls to the place, and flies at a speed invisible to the naked eye towards the target two kilometers away.

"Xiu'er~"

The trajectory of the shells could not be seen clearly with the naked eye, leaving only a poignant and sharp sound of breaking through the air.

"Bang!"

On the target in the distance, the armor-piercing bullet hit it hard.

"Tail stabilized shelling armor-piercing bullet?" Ihor was knowledgeable, and asked Zheng Yucheng next to him in surprise.

Zheng Yucheng nodded, "You must test the armor-piercing bullet, don't you?" The chamber pressure of the fully charged anti-personnel blasting grenade is higher......"

According to the tank gun test firing plan, these tank guns will be gradually tested according to armor-piercing shells, anti-personnel blasting shells, armor-piercing shells, etc.

The Iraqis are a little tempted on the side.

Especially in Issad, the tail stabilized shelling armor-piercing projectile is the most advanced armor-piercing projectile, and they can't get it at all.

As soon as the Chinese came up, they experimented with this kind of shell in front of them, and the intention was naturally obvious.

"Gun position No. 2, 2000 meters of 350 mm homogeneous armor target plate No. 21, armor-piercing shell No. 3, fire!"

"Boom!"

The muzzle of the gun flashed a fire larger than that of gun position No. 1, and the entire barrel shook.

Everyone watching immediately frowned.

Xie Kai's heart even tightened.

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

Although after the disemboweling, the outer butt of the armor-piercing bullet was separated, and the sound of the armor-piercing bullet piercing the sky was far less sharp than the first one.

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

Yes, the armor-piercing projectile still missed the target even though it was aimed at the target plate.

The whole scene was banned for a while.

"Continue to test fire, the problem of the muzzle brake!" In this case, Qin Jinyuan had already prepared in his heart.

The muzzle brake has an impact on the tail stable shelling armor-piercing projectile, which is actually clear to everyone, but the muzzle brake can reduce the recoil by at least 40%, which is very attractive.

The tank gun of the 359 tank will use the best solution obtained after the shooting test.

"Muzzle brake, can't you really install this thing?" Xie Kai was a little speechless in his heart.

He knew better than anyone that none of the advanced main battle tanks in the back were equipped with muzzle brakes.

China's 99, Lao Maozi's T14, the American imperialists' M1 series, the German Leopard 2, etc., no one has installed a brake on the tank gun.

The reason why Xie Kai did not stop this plan is because China has just obtained the technology of tail stabilized deshelling and armor-piercing projectiles, and it does not know much about it. And the muzzle brake is too powerful for the weakening of recoil. This makes it necessary to conduct such a test.

and even make improvements.

Once the expectation is achieved, the chamber pressure of the tank gun will be further increased.

Neither the Iraqis nor the Iranians have shown any indication.

The test personnel at the base were somewhat nervous.

But the three guns in the back are still starting to fire the first gun.

Another tank gun with different muzzle brakes, although it did not miss the target, did not penetrate the target of 350 mm homogeneous armor in the final result!

"Record the data and continue to load!" After Qin Jinyuan questioned Zheng Yucheng and others, he was instructed to continue the test firing.

It is still an armor-piercing shell, but the thickness of the homogeneous armor has begun to increase.

Each target is increased in thickness by 50 mm.

It has been impenetrable, and then the target is recreated for experimentation.

"Boom!"

"Boom!"

In order to obtain more data for the newly developed 125 mm tank gun, the base test firing did not take the angle of tilting the steel plate to make theoretical speculations, but used a single piece of thick steel mounted on the base below, just for more accurate data.

All the way up to 500 mm of homogeneous armor, three tank guns without muzzle brakes were penetrable.

By the time it reaches 550 mm, it is no longer fully penetrating.

"Replace the composite armor target!"

There are enough targets prepared before, and when the live-fire test begins, the gun will be fired until there is a problem with the entire barrel.

"Director Zheng, it's not going to work today, we must pull the cannon back for testing, and if there is no problem, we will do it again......" Without a few shots, Qin Jinyuan didn't dare to be careless.

Zheng Yucheng did not force it.

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

"According to computer simulation, if 52 times the length of the body tube is used, how much will the armor-piercing ability be improved?" Xie Kai asked.

"This is already very good!" Qin Jinyuan looked at Xie Kai, a little unsure of what he meant.

How did he know that Xie Kai was not at all satisfied with the armor-piercing thickness of just over 500 mm of homogeneous armor?

The 125 mm tank gun above the 99A has an armor penetration thickness of more than 1000 mm!

"We still have a lot of potential to dig up, whether it is the material of the armor-piercing projectile, or the barrel of the gun, the charge of the shell, etc., it can be effectively improved......," Wang Guilin comforted Xie Kai, "Compared with domestic tank guns, this performance is already very good." ”

"Our artillery has adopted all the new technology and new technology, and there is not much potential that can be tapped!" Xie Kai knows very well that this kind of attack power will not allow the Iraqis to overturn the M1 main battle tank of the US imperialists in the Gulf War, and at most they will bully the M60 of the United States.