Zhang Yun made countless grass men densely on the mountain to simulate the enemy's formation, and a black cannon had been pushed into the running position.

"Ran Zhi, how far can the artillery be shot?" Zhang Yun asked with a little excitement.

"Report to Xuanfu, within a thousand steps!" Ran Zhi replied firmly. In fact, they had tested the shooting several times before this.

Hearing such a long distance, even an old man like Xu Jun could not calm down.

Originally, he thought that the range of flintlock rifle was already very far away, but he didn't expect that the cannon was within a thousand steps.

"This... can really hit this far?" Xu Ping, a big black man, said in disbelief.

"Don't worry, two generals, I promise!" Ran Zhi showed a confident smile on his face. This sentence gave everyone a reassurance.

"How much pig iron should such a big guy use? This cannon is really valuable. No wonder my husband said that the cannon is ten thousand taels of gold when it fires." Zhao Min, who was standing next to Zhang Yun, suddenly interrupted.

Zhang Yun smiled helplessly, obviously the meaning of this sentence was misunderstood!

"Xuanfu, can I test the ejaculation?" Ran Zhi asked with a bow.

Zhang Yun nodded and signaled everyone to continue to retreat to the safe area.

Then he briefly introduced the principles and power of artillery to everyone.

"Brother Mo San, let's start!" Seeing everyone retreating to the safe distance Zhang Yun said, Ran Zhi turned around and smiled at Mo San.

"Okay, you guys go back!" Mo San nodded, and then led the people to operate the cannon himself.

Load, load, finally load the fuse, and then start aiming.

After everything was ready, Mo San turned around and looked at Zhang Yun, waiting for Zhang Yun's final confirmation.

"Madam, cover your ears." Zhang Yun said softly to Zhao Min, and then nodded at Mo San.

"Everyone, please hide behind the rocks and cover your ears." Ran Zhi reminded those bold guys in an urgent manner.

"Why is this?" Xu Ping asked differently. He was one of those bold guys.

"Just in case!" Ran Zhi said helplessly.

For someone like Xu Ping who is used to life and death, this may be a bit unnecessary. But Ran Zhi couldn't guarantee that this test shot would be successful, after all, there was still a risk of an explosion.

At present, the most dangerous ones are Mo San and others!

"What are you talking about? Just do it." Zhang Yun said, but Xu Ping didn't dare to ignore him. He wanted to go in and see him, so he could only lower his head and go backwards.

Everything was ready, Mo San held a fire note in his hand and lit the fuse behind the cannon.

Bang! A shocking sound came. Although everyone was mentally prepared, including Zhang Yun, they were still shocked by the cannon.

Not to mention them, I guess the whole Jingjiang Prefecture City can hear this loud noise now!

Xu Ping was the first to poke his head out. After seeing the cannon fire, a stream of smoke spewed out of the muzzle.

After taking a closer look at the target made by the scarecrow, although it was thousands of steps away, Xu Ping felt a chill on his back.

A person with good eyesight can still see that the entire array of scarecrows has plowed a line. If it were a human body, I would feel cold sweat on my back.

Mo San cleaned the cannon barrel a little clumsyly and loaded the medicine again!

Another bang came, and a straight line was plowed out from the scarecrow formation in the distance.

"Hiss!" Seeing such a scene, Xu Ping, a big black man, took a breath and a scene suddenly appeared in his mind.

When the two armies met, they both formed their usual formations. At this time, countless shells were shot out from their own camp, and they were shot from afar, causing the other side to panic and then collapsed.

Next is our side's all-out effort to fight, and a big victory is inevitable!

"Big black? Big black? Why are you laughing at?" Xu Jun patted Xu Ping, who was trapped in lust.

In the current war, before the two armies fight, they usually set up their formation first, because in this way the army has organizational strength. If a scattered piece of sand is dispersed, just one impact of the cavalry will be destroyed.

The traditional dense formation is simply a big feast for cannons!

Unfortunately, no one knows now that Zhang Yun has started to think about the flowering bullet. The solid bullet is a thing, after all, the power is limited!

"It is no exaggeration to say that if the new army installed such artillery, whether the Jin army or other army, they only need to fire a few artillery and then charge, and the enemy will definitely be defeated!" This is the conclusion that Qin Ming came to after a long silence.

Xu Jun, who is also a military general, also agrees with this point very much.

Without waiting for Zhang Yun to give the order, Xu Ping, Qin Ming and Xu Jun had already rushed to the shooting range where the scarecrow was.

But these are not what Zhang Yun cares about. What he wants to know most now is the production issue.

According to the current craftsmanship, all the craftsmen worked together and made a total of twenty available clay molds.

Afterwards, the craftsmen began to melt the iron in the stove and pour it into the mud mold.

Then wait until the molten iron in the mud mold solidifies, then break the mud mold, which is the first step.

Of course, a mud film is only half, and then the iron mold of this half must be matched to it. If the two iron molds can be perfectly matched, it will be considered successful, otherwise it will fail.

Finally, after comparison, only six of them can be spliced ​​out in total.

Then the most critical step is to splice the polished two halves of iron mold into a cylinder, and then the craftsmen put the already made mud core into the iron mold cylinder.

On the iron mold at the bottom, there are two holes as thick as arms, plus the holes used for the fuse on the end, so that the mud core can be evenly fixed in the middle of the iron mold.

In this way, the thickness of the barrel will not become uneven due to external forces during pouring.

The two holes next to it are the cannon slots, which are like two arms, can be stuck on the cannon truck well. The purpose of this is to resist the recoil force when the shell is fired.

The first casting gun was not experienced, and only three of the six-piece iron molds were successful. The rest were either uneven barrel thickness or honeycombs, which needed to be re-furnished.

However, when these three finished products were used for shooting experiments, only one in front of them was left, and the other two were spent on the experiments.

If it weren't for the gun stand and wheels, I'm afraid this cannon would be difficult to put into use in actual combat.

The gun mount and wheels are made of steel, mainly because the steel is lighter than copper and durable.

Although the current steelmaking technology cannot reach the level of later generations, even gun barrels can be used, let alone gun mounts.

However, it takes time to maintain it, otherwise it will easily rust.

Zhang Yun knew that most of the earliest cannons recorded in historical books were made of wood.

Although this solves the transportation problem, it cannot withstand the recoil during firing. After arriving at the battlefield, it is very inconvenient to remove the cannon and build a turret.

Zhang Yun designed the artillery like the one in front of him completely according to the Napoleon gun.

It comes with its own metal gun stand and wheels, which not only moves quickly, but also can participate in battles at any time, and is also easy to turn and aim.

Since you know the advantages and disadvantages, of course you have to choose the best and most suitable one!

The entire cannon and the cannon stand are only about 1,500 kilograms. Although it is difficult for people to pull, it is much more convenient to use a horse to pull it.
Chapter completed!