Li Guo dragged Bi Maokang to a nearby training ground, which was originally developed to train soldiers to shoot accurately. On the west side, there is a test site dedicated to the development of firearms.

This site had been built a long time ago, but it was not of much use, because the accuracy and range of the firearms, as well as the speed of firing, were far from enough. In order to avoid these drawbacks, Li Guocai trained his soldiers to shoot in three stages to make up for the shortcomings of the muskets of the time.

So, now the training ground is equal to a semi-abandoned state.

When he arrived at the training ground, Li Guo demonstrated the process of loading a Portuguese gun, of course, a breech gun, in which gunpowder was first poured into the barrel and tamped, and then the projectile was put in.

Looking at the projectile, Bi Maokang was very curious, so he asked, "Master Tiger, why is this iron egg wrapped in thin cowhide?"

Li Guo nodded and boasted, "You are a craftsman who makes guns, and you observe carefully." This is because there is rifling in this gun, so there is a gap, and after the gunpowder explodes, the elasticity of the bullet wrapped with cowhide can fill the gap, making the bullet shoot farther. ”

Bi Maokang nodded, watched Li Guo take the pass and stuff the bullet into it, and said, "The muskets are the same now, and loading them is time-consuming, laborious, and inconvenient. ”

Li Guo smiled and said to Bi Maokang, "I've been thinking about the trouble-saving gun for a long time, but let's take a look at this gun first, whether it is very far, whether it is very accurate." ”

"Okay." Bi Maokang stood on the side.

So, after loading the ammunition, Li Guo raised the gun, put the butt of the gun on his shoulder, and aimed at the target in the distance in a standard standing shooting style.

Li Guo steadied his breathing, saw it clearly, and hooked the trigger.

Just listen. Bang! A shot, bullets whizzed out. I hit the target.

Jiang Fa, who was beside him, ran over to check the target, and came back to tell Li Guo. Right in the middle of the heart.

Li Guo didn't feel overwhelmed.

Bi Maokang didn't think so, he thought that Li Guo was a blind cat who touched a dead mouse, and he was blinded.

You know, this target needs to be about 100 meters away, and it is impossible to hit the bull's-eye at such a long distance.

In the original time and space, there was a historical military scientist who carefully studied and restored the arquebus and flintlock pistol, and after the actual examination, he told such a joke. In other words, if an arquebus or flintlock pistol at that time wanted to accurately hit something 80 meters away, the probability was about the same as the probability of hitting the moon. Of course, this refers to smoothbore guns, not rifled guns.

Li Guo saw Bi Maokang's half-believing expression, Li Guo loaded the ammunition, handed the gun to Bi Maokang's hand, and let him experience it for himself.

He spent most of his life studying firearms. Naturally, he was familiar with firearm aiming, ordinary arquebuses and flintlock pistols, which were almost a hundred shots within fifty meters. Bi Maokang seriously aimed at the red heart of the target in the distance. Bang! It's a shot.

Then, Bi Mao Kangxin is just like others. He personally ran to the target in the distance, and sure enough, one of his shots also hit the bull's-eye like Li Guo.

Could it be that he is also blinded? Bi Maokang bang bang. Three shots were fired in succession, all of which hit the bull's-eye.

Well? What's going on? Except for the grooved rifling in the barrel. The rest are like the flintlock pistols that I made, but how can this gun hit so far? Bi Maokang was a little dazed.

Li Guo smiled. dragged Bi Maokang into the house and told him his thoughts.

In fact, at that time, arquebuses and flintlock pistols were roughly the same, but only one needed to be ignited, and one was self-firing, both were smoothbore guns, and the effective range was about the same, and after the projectile left the chamber for a certain distance, it did not know where it flew.

The advantage of rifled guns is the rifling in the barrel, and the role of rifling is to keep the warhead in a given direction after being discharged, and to accurately hit the enemy. Although rifling was used in Europe in the 15th century, it was not until the 19th century that rifled guns became widespread due to the difficulties of the manufacturing process and the fact that they were all front-loading ammunition at that time, and it was even more troublesome than smoothbore guns to reload rifled guns.

When he arrived at the room of the training ground, Li Guo instructed, "Prepare the wine and food, I want to have a detailed chat with Lao Bi." ”

So, Li Guo Bi Maokang talked about the principles of ballistics and rifling, of course, Li Guo only relied on the rich knowledge of the original time and space, to talk about it in layman's terms, and he couldn't explain more esoteric things.

However, Li Guo's words made Bi Maokang pause, "Master Tiger, I understand a little, this is like a crossbow, because the shaft of the crossbow arrow is placed in the arrow slot, so the crossbow arrow is easier to fire than the bow and arrow, and it can be shot more accurately."

Li Guo nodded, wiped the sweat on his forehead, and after a long day's effort, he finally made Bi Maokang understand better.

But Li Guo not only considers the accuracy of the gun, but also the power of the ammunition, that is, how to shoot farther. In addition, the rate of fire is also critical.

In fact, since Li Guo crossed over, he has been thinking about how to make guns all the time, but how can it be so easy. First of all, it is extremely expensive to build guns and cannons, and it was only after Li Guo entrenched himself in Guangxi that the economic resources began to improve. In addition, the level of science and technology at that time, it was pure nonsense to say that it was necessary to build a submachine gun or something, and it was necessary to gradually improve the level of firearms in combination with the scientific and technological conditions at that time.

However, Li Guo has been thinking about how to improve the gun, and now, his idea is mature, and he has the strength to realize his idea.

So, the more the two talked, the more energetic they became, and from the morning to the second half of the night, Li Guo told Bi Maokang all his ideas, including the sketches of the design, and drew a whole stack. Bi Maokang became more and more fascinated by listening, and discussed revisions with Li Guo from time to time.

When it was over, Li Guo told Bi Maokang, "You just have to be bold and let it go, whether it is human, financial, or material, I will give you absolute support!" ”

Bi Maokang's expression was solemn, and he felt a heavy responsibility.

And after Li Guo finished explaining the task, he went to his own business. At that time, he was still busy building ships.

On this day, Nie Xin, Liu Tichun, Nie Xin and others rushed from everywhere to report to Li Guo on the garrisons, farming and other matters.

At this time, Bi Maokang came to Li Guo with a smile with a long package.

When Li Guo saw Bi Maokang, he beckoned, "Come, old Bi, let's eat and drink together." ”

Bi Maokang shook his head and said happily to Li Guo, "Master Tiger, it's done!" ”

"It's finished?" Li Guo immediately realized that he must have designed a firearm by himself. Li Guo was overjoyed, stood up, and continued to ask, "Is it really done?" So fast? "You know, it's only been a little over a month.

"It's done! Except for rifling, which is not easy to do, the rest is not difficult. Bi Maokang nodded uncontrollably, and opened the package.

Liu Tichun and others were curious, and they came to watch, only to see a strange gun in Bi Maokang's hand. The barrel of this gun does not seem to be fixed, and the end attached to the handle seems to be folded and hangs diagonally.

What kind of broken gun is this, everyone can't see the clue. (To be continued......)