In fact, in recent years, the relevant departments have also thought of the upgrade of 100 mm tank guns, so in 1979, the successful development of 100 mm armor-piercing projectiles, which is considered to be an increase in the type of bullets, and then, the successful development of 100 mm caliber tungsten head armor-piercing projectiles, the muzzle velocity of this armor-piercing projectile is 1435 meters per second, the direct firing distance is 1640 meters, and the armor-piercing power is greatly improved compared with the previous imitation of the БР-412 armor-piercing projectile, which can penetrate the frontal armor of the hull of T-55 and other tanks.

However, this 100-mm tungsten-head armor-piercing projectile is also a full-caliber armor-piercing projectile, which is prone to ricochet when hitting a large inclination angle, so no one knows what the actual performance is.

As for sub-caliber armor-piercing shells? Before the introduction of the 105-mm rifled gun, everyone was not sure how to create the sub-caliber armor-piercing shell of this rifled gun, and how to make the most complex sliding cartridge belt.

So, the matter was put on hold.

Until now, in order to sell the 69 tank, a machine factory has completed the research and development of these shells in advance, anyway, when Qin Zhenhua was a blockbuster, it relied on the technology of armor-piercing shells.

Now, putting aside the two armor-piercing shells in front, Qin Zhenhua introduced: "We have fully introduced, digested and absorbed the 105 mm tank gun, on this basis, we have improved the armor-piercing shell of our own 100 mm tank gun, which is almost imitated and reduced, as for the performance, it is naturally not as good as our 105 mm armor-piercing projectile, but, on the whole, the improvement is still obvious." ”

After speaking, Qin Zhenhua pointed to an artillery shell on the left and said: "This is our first phase of ammunition, this shell, with a total length of 950 mm, the core of which is made of tungsten alloy, with a length-diameter ratio of 15, has reached 250 mm armor-piercing capacity in the test firing." ”

Now, it is this kind of shell that is sold, compared with the previous penetration depth of more than 100 mm, the performance has been increased by almost more than half, and it is fully capable of penetrating the frontal main armor of the Chieftain tank.

Of course, this has a lot to do with the quality of the tankers, and if the two sides change one or the other, it will definitely be a one-sided record.

"Look at this side again, we use the latest powder metallurgy technology to create a new type of armor-piercing bullet." When Qin Zhenhua said this, he sighed very much in his heart, this is the bullet core that he got back when he went to the capital last time, and it is precisely because this material is stronger that the performance of this shell has been strengthened.

"Its core, 485 mm long, 27 mm in diameter, has an aspect ratio of 18." Qin Zhenhua introduced: "This kind of armor-piercing projectile, at a distance of one thousand meters, should penetrate more than 300 millimeters. ”

More than 300 mm! When he heard this introduction, Huang Lao's eyes flashed with surprise and admiration.

This performance has reached the performance of the original 100mm smoothbore gun!

And it's an even older rifled gun!

When the 69 tank was developed, the rifled gun was replaced by a smoothbore gun, which was also considered to follow the trend, as a result, the armor-piercing shell was not powerful, and the penetration depth did not increase further, on the contrary, the shell fluttered and could not be hit accurately, so this led to the 69 tank being replaced with a rifled gun again.

After that, Qin Zhenhua's subordinates developed a new type of artillery shell, which made the penetration depth reach 320 mm, which made an essential breakthrough and gave the troops the strength to fight against the Soviet Union in the north.

It's just that there are still many situations to consider. The 100 mm smoothbore gun is actually achieved by increasing the charge, and in order to improve the performance of the tank gun, it is necessary to increase the volume of the cartridge.

Its cartridge is 9.4 liters, which is even larger than the 8.7 liters of the 105 mm rifled gun, and the more propellant it has, the higher the chamber pressure, the thicker the barrel, so the 100 mm smoothbore gun has a large dead weight.

The 105 mm tank gun was tested in the competition, although it did not exceed the 100 mm smoothbore gun in terms of performance, it was still introduced in China. It is because of the greater potential of this rifled gun.

And now, our own 100 mm rifled guns, the second phase of the shell, can already be compared to the depth of the 100 mm smoothbore guns, which is shocking.

Everyone's eyes flashed with anticipation, and Huang Lao asked with a smile: "Just now you said that the penetration depth should be more than three hundred millimeters, and there is no specific data?" ”

Qin Zhenhua nodded: "Yes, because there is only one armor-piercing bullet of this kind, we are still reluctant to test fire, after all, the cost of this one is more than 10,000." ”

There was a chill in everyone's hearts, Qin Zhenhua was talking about the cost, but it was so high?

"The warhead uses powder metallurgy technology, which is quite expensive to build." Qin Zhenhua said: "We originally waited for foreign guests to come and show them to foreign guests. ”

No one does not want their tanks to be more powerful, although the penetration depth of the first phase of the bomb has reached 250 mm, but there is no deepest, only deeper, after changing the new material and increasing the aspect ratio, let it reach a depth of 300 mm, obviously, it is more attractive.

Needless to say, the Chieftain, a newer tank than the Chieftain, also has the possibility of being destroyed.

"I understand, you kid is saying, now let's all come and see, do you plan to let our troops reimburse the shooting cost of this armor-piercing bullet?" Huang Lao pointed to Qin Zhenhua's head and said: "Sure enough, your kid is the same as Lao Zhao, you are not righteous, since the country's reform and opening up, since the country began to follow the market economy, hmph, one by one, they have all been drilled into the money eye!" ”

"Of course not, since you are here, needless to say 10,000 cannons, even 100,000 cannons, we also have to fight." Qin Zhenhua said: "Now, please take care of the leaders!" Two pillars, on! ”

Wang Erzhu carried the shell and jumped onto the 69 tank.

Zhang Xiangqian drove the 69 tank, which was ready to be exported, and roared towards the shooting range.

When the tank came back again, the special tank repair vehicle had already hoisted the target and drove over, and everyone was full of praise when they saw the target being pierced.

The core of the bullet was just pierced inside, and it was just penetrated, and looking at the way it passed diagonally, it was definitely more than 300 millimeters.

"Three hundred and fifteen millimeters. Same as we calculated. Qin Zhenhua said: "Leaders, what do you think of our shells? ”

"Well, yes, it seems that although the price is more expensive, we can also purchase a batch, so that the 100 mm rifled gun does not need to be replaced, and in comparison, it can save a lot of money."

Wait, leader, what are you talking about?