At the same time, the city of Jingzhao Mansion has also become treacherous, and some people are constantly connecting in private, not knowing what they want to do.

On Chen Yan's royal car, Chen Yan and Guo Gongtou sat opposite each other.

"Guo Qing, how have you developed the rifled flintlock pistol, do you have a clue?"

Chen Yan asked.

"Tell the king, the results have been released, but it is not yet possible to achieve large-scale production, and if you take the rifling from the barrel, the probability of scrapping the barrel is too great."

"And only those masters have a chance of success."

Guo Craftsman said.

"Besides, do you have any other research results in the Ministry of Engineering?"

Chen Yan asked.

"We have tested the alloy steel that the king said, and the hardness and toughness are very good, and it is just right to use it on the machine tool to polish the gun breech."

"How many alloys have you tested?"

Chen Yan touched his chin and asked.

The concept of alloys was not very difficult for those craftsmen to understand, because the ancestors had precedents.

During the Spring and Autumn Period and the Warring States Period, alloys had already appeared on the territory of China.

Bronze, that is, the earliest alloy, it is said that when Qin Shi Huang ruled the world, the weapons used by the Qin army were also some kind of bronze alloy.

The sword of King Goujian of Yue is an alloy of chromium metal and copper, so that he was buried deep underground for 2,000 years, and it still looks new after being unearthed.

Chen Yan's instructions to these craftsmen were to smelt various minerals and steel together to produce various alloys.

Don't be afraid to waste, just make the right thing!

Guo Gongtou pondered for a moment and said.

"King, it's not just one, it's just that we haven't mastered the definite formula of several other alloys, and the discovery is just a coincidence, so we can't use it yet."

"It wasn't reported."

Chen Yan bowed slightly.

"Anything else?"

"We've tried to improve the Earthquake Thunder and artillery shells, and the power has indeed increased, but the cost has also become a lot higher."

"What about gunpowder? How's your research on new gunpowder? ”

Chen Yan asked.

He was very dissatisfied with the black/gunpowder, even if it was not very powerful, it would produce a lot of gunsmoke.

However, he didn't know any other gunpowder recipes!

In later generations, the recipe for black/gunpowder was not a secret, and it was very simple to find it on the Internet, but the more powerful smokeless gunpowder, yellow gunpowder, nitrate/glycerin, etc......

Chen Yan didn't know the formula, only a general direction, but he really didn't know how to make it.

Chen Yan can only tell the craftsmen the general direction of development, so that they can find a way to try to make it, as for when the results will be produced, to be honest, Chen Yan has no bottom in his heart.

It didn't take long for Chen Yan's royal car to come to the test site of the Ministry of Engineering.

It stands to reason that the development, updating, and production of weapons should be carried out in the institutions under the Privy Council, not in the Ministry of Works.

However, due to the new establishment of the Qin State, many systems are not perfect, and Chen Yan can only arrange it in this way for the time being, after all, the Ministry of Industry was established by the Dangyu Army during the Erfengshan period.

With seventy percent of the craftsmen in Daqin, in line with the principle of hitting the power to do great things, Chen Yan has not changed for the time being.

Chen Yan and Guo Craftsman got down from the royal car, Chen Yan walked in front, and the two came to an open field, where several cannons were placed in a row.

It's all guns glowing with a ghostly glow!

At a glance, Chen Yan saw several different types of cannons.

"Guo Qing will introduce Lonely."

Chen Yan said.

"No!"

"King, from left to right, they are bronze tiger squatting cannon, iron tiger squat cannon, copper mortar cannon, iron mortar cannon, bronze 500 jin cannon, iron 500 jin cannon, copper cannon, iron can......non, iron cannon, etc."

"The heavy cannons of 2,000 catties and 5,000 catties can't be cast with iron so far, they can only be made of copper."

Guo Craftsman said.

Chen Yan bowed slightly.

"Come on, try the gun!"

As soon as Chen Yan gave the order, the craftsmen and the artillerymen of the Dang Capture Army stepped forward one after another and began to prepare for the test cannon.

Set the target point, reload, aim......

Then ignite the lead.

Thundered! Thundered! Thundered!

A loud roar kept sounding in the test range.

The power of the bronze Tiger Squat Cannon and the Iron Tiger Squat Cannon are almost the same, and the range of the two is only a few tens of meters.

There is no difference between a bronze mortar cannon and an iron mortar cannon, both of which are shotguns, as for the accuracy...... Emma, is the shotgun on target?

The long-range range of the bronze 500-pound cannon was 800 meters, while the iron-cast 500-pound cannon was only about 700 meters.

The bronze cannon has a maximum range of 1,400 meters, while the iron cannon has only 1,200 meters.

Moreover, the service life of cast iron guns is still much less than that of bronze guns.

However, cast iron artillery also had his advantages!

The price is cheap, but it is more important that it is lightweight.

Compared with the same volume of iron and copper, iron is much lighter, and it is more convenient to use on the battlefield.

It's just that the technical difficulty of iron-cast artillery is much higher than that of copper-cast artillery, and the most difficult thing is the quality of iron.

If the quality of the steel is not up to par, the cast iron cannon is a joke!

Fortunately, the Swinging Army has finally overcome this difficulty!

Chen Yan was very satisfied with the iron-cast artillery, and ordered all the relevant personnel to be commended on the spot, and behaved very generously.

Although the funds of the Qin State have been a little tight recently, Chen Yan still knows what should be the province and what should not be the province.

Chen Yan can not repair the palace, anyway, he feels that he will have to move sooner or later in a few years, either Kaifeng City, or Nanjing Jinling City.

So, it doesn't matter if the palace is repaired or not!

However, if he can't give these craftsmen enough favorable conditions, why should these craftsmen get up early every day and help Chen Yan develop new weapons.

"Didn't Guo Qing say that the rifled gun has a finished product? Take it out and show it to Lonely. ”

Chen Yan said, his face full of eager expression.

"Yes."

Craftsman Guo agreed, and it didn't take long for a craftsman to come over with a gun that looked no different from a flintlock pistol.

Chen Yan took the rifled gun and played with it in his hand.

He knew that the subtlety of the rifled gun could not be seen from the outside, and the real difficulty was the rifled part.

Rifling in the chamber of the gun!

It is precisely because of the existence of rifling that the range and power of rifled guns will be greatly strengthened compared with flintlock guns.

"Let's try it and see how far this gun can hit."

Chen Yan said, personally began to load the flintlock pistol, then compacted the gunpowder, and aimed.

I have to say that the loading of rifled guns is indeed much more difficult than that of flintlock guns, and it took Chen Yan a full minute to complete the loading.

He took a scope from a nearby sergeant and attached it to the gun, which would ensure that the person would be out of sight under normal circumstances.