The combination of microphone, speaker and radio station solves the problem of long-distance voice calls, and if it develops further from this technical route, many useful things can be produced.

For example, after miniaturization, it can be turned into a short-wave radio station at the class level, while after large-scale, it can be covered by provincial radio stations... In short, the application routes you can see ahead are very wide.

After briefly talking to the students in the electrical laboratory about various technical routes and possibilities that may exist in the future, Xiao Heng left them to improve themselves, and he took a large jar of made-up launching medicine to the backyard of Qin Mansion.

Wang Tiehui was not here. At this time, he should still be busy with the various tasks that Xiao Heng had just assigned, especially the processing of the new barrel is the top priority, and Wang Tiehui basically needs to supervise the construction of the new gun.

The brass shells that Xiao Hengran and Wang Tiechu made for him were placed on the table in the warehouse.

The size of these brass shells is completely made of those shells picked up by Xiao Heng. Xiao Heng specially measured them with a vernier caliper and found that the tolerance was very small. I believe Wang Tiech was also very careful when manufacturing them.

In addition to these brass eggshells, the box next to it is filled with lead warheads.

The size of these warheads is mapped and manufactured according to the intact bullets. The size is exactly the same as the bullets brought by Xiao Heng. The difference is that the appearance of modern bullets is wrapped in a layer of copper skin, while Xiao Heng is directly lead.

The reason why copper clad bullets were used in later generations was mainly because the copper was soft and lubricating, which could reduce the wear of the bullet to the rifle.

And why not just use lead bullets?

Logically speaking, lead is not softer than copper, and lead is also better lubricating than copper. However, the problem is that lead is too soft and it is difficult to maintain the shape of the bullet.

If a good aerodynamic shape cannot be maintained, the bullet's ballistics will become random, and the effect of the rifle will be greatly reduced.

But copper itself is too expensive, and it is OK to use it on a small scale, but if it is used on a large scale, without a modern smelting industry can't withstand such consumption. Not to mention that a single shot is equivalent to a few cents left. One class will cost a base of several taels of silver!

Even if Xiao Heng’s family is big and his business is now unable to consume. Without national-level resources, even if the army is supported, he cannot afford to fight, especially in the war of hot weapons.

Although lead metal is cheaper than copper, it is actually a relatively expensive metal. As for what is cheaper... it is of course cast iron! In Dasong, where blast furnaces and coking technology were invented, the price of iron was incredibly cheap. If the historical process was not interrupted, a large-scale coal and iron industrial system might gradually emerge.

So these bullets that look like pure lead are actually cast iron covered with lead.

Lead can be embedded in the borehole better than copper, making it more airtight... and the cast iron warhead inside is difficult to change its shape, which can keep the bullet in a basic shape without being too deformed.

Theoretically, such a warhead will have a worse performance, but its benefits are also obvious, that is, it is cheap.

The use scenarios of pistols are basically within 30 meters, or even about ten meters, so it doesn't matter whether the warhead can maintain a good enough aerodynamic appearance... At this distance, its ballistic itself will not deviate too far. If it hits the target, it will hit the target. If it can hit the target so close, it has nothing to do with the aerodynamic performance of the warhead.

Xiao Heng grabbed a bullet shell from the box and stuffed a piece of wax paper on the bottom. Then filled it with the launching medicine? Finally, he pressed the cast iron warhead covered with lead... This kind of work seemed a bit boring, but Xiao Heng was very excited and quickly pressed hundreds of bullets.

After more than half a year? This weapon from the future has finally rejuvenated its youth? And the long-awaited magazine has finally been refilled.

With a pistol, the two refilled magazines, and those bullets that were not filled with magazines? Xiao Heng found an electric motorcycle and drove directly to the shooting range in the back mountain.

The shooting range on the back mountain was originally the valley where Xiao Heng used to test explosives, and later the various guns and cannons made by Xiao Heng and others have basically been tested here? Gradually, there were more infrastructure? In the end, it was simply built into a shooting range and an explosion test site.

There are usually no people here, and it is the same when Xiao Heng comes. However, in order to prevent people from staying in the shooting range, Xiao Heng still ignited the second kicks he carried with him... As the explosion echoed throughout the valley, Xiao Heng finally confirmed that there was no one here.

The explosion test site is a very dangerous place? It is hard to say if there are people here in normal times? So using the second kick as a signal to confirm that there is absolutely no one in the field has become an important part of the safety manual.

It would be unworthy if casualties were caused in the test due to such negligence.

After confirming that there was indeed no one in the shooting range, Xiao Heng took a wooden handle and hung it on it, then walked to the shooting position and started shooting at the target.

"bump……"

"bump……"

“…”

As Xiao Heng pulled the trigger, crisp gunshots also sounded... Although the launching medicine they are using now is different from modern launching medicines, there is not much difference in Xiao Heng's actual design experience.

The bullet was fired smoothly and was only the first step.

Next, Xiao Heng checked the bullet holes on the target? He found the bullet holes of all bullets smoothly... This shows that at least at this distance, it is absolutely feasible to use lead-covered cast iron bullets.

A few more magazines were fired? After confirming that he was familiar with the ballistics of these bullets, Xiao Heng rode his bike down the mountain... He was about to press down all the remaining bullets.

When Xiao Heng returned to the backyard of Qin Mansion, Wang Tiechhui was there too. There were a few iron pipes in front of him? And he was holding one in his hand and fiddling with it.

"Oh? There will be results so soon?" Xiao Heng asked in surprise.

"This process is not complicated... Besides, we have produced seamless steel pipes? Now it's just adding some processing steps? There's no difficulty." Although Wang Tiechu said it easily, he still frowned.

"What's wrong? Is there any problem?" Xiao Heng put the bullet bag on the table and made a jingle and collision sound.

"The problem... there is no problem." Wang Tiechui shook his head, "I was just thinking if I didn't use paper shell bullets, but these copper shell bullets would be better?"

"Okay, it will definitely be better." Xiao Heng smiled, picked up a brass shell and put it in his hand for a while before handing it to Wang Tiehui. "But such a small shell costs several cents... This is not considered manual money!"

"One or two are OK, but if there are too many, we will soon be poor."

Hearing Xiao Heng's words, Wang Tiechhui slowly took over the brass eggshell in his hand and shook his head: "Forget it, that's what I think."

"But although it cannot be equipped on a large scale, we can use it to create more advanced weapons." Xiao Heng took out the automatic pistol in his hand and put it in front of Wang Tiehui. "Although it is not necessary to be so exquisite, even if it is made rougher and better bullets can be used as a sniper rifle."

"Sniper rifle?" Wang Tiechui had heard many fresh words here in Xiao Heng, and he had already developed the good habit of asking if he didn't understand.

"What is a sniper rifle?"

"You can understand it as a sharpshooter." Xiao Heng explained, "It's just that this sharpshooter has a very good bow."

"Oh..." Wang Tiech nodded, looked at the barrels and brass bullet shells thoughtfully, picked up the bullet shells handed to him by Xiao Heng and said thoughtfully, "The sharpshooter is matched with a good bow, and a good bow is matched with a good arrow... This is the same."

Seeing that Wang Tiechhui was beginning to think about nothing, Xiao Heng grabbed another bullet shell and started mechanically putting wax paper, pouring gunpowder, and suppressing the warhead...

When a box of bullet shells was consumed nearly half, Wang Tiechhui finally came to his senses in his mind, and also grabbed a handful of bullet shells to help Xiao Heng press the bullets.

"Young Master suddenly prepared so many bullets. What are you going to do?" Wang Tiechui seemed to feel something.

"Yeah, you guy has become sensitive? How did you guess it?" Xiao Heng pretended to be surprised.

"When those muskets were first built, I thought about whether I could improve them further. After all, the double-barrel hunting rifle was too heavy and I couldn't lift it without a little arm strength."

Wang Tiechui recalled the previous incident: "But the young master said he was not in a hurry to improve it, it was enough to use it... So although I was a little itchy, I gave up."

"But this time, the young master began to rush to get new cannons and rifled gun barrels. I was thinking about this... Now I saw the young master rushing to press bullets and I was sure."

"Is it...what is there any change in the north?"

Wang Tiechui asked with some concern.

"Not bad." Xiao Heng nodded.

Wang Tiechhui is already Xiao Heng's right-hand man. To put it bluntly, his importance is still above Xiao Heng's brother-in-law who was the Hanlin brother-in-law at that time, and even he was not too arrogant than Qin recommending Lord Qin... So Xiao Heng would not hide this core issue from him.

"According to the information brought by the Dutch, the Mongols may be much stronger than we had imagined before..." Speaking of this, Xiao Heng couldn't help but sigh deeply, "Originally, I felt that with our current strength, not to resist the Mongols' southward movement, at least there should be no problem in protecting themselves... However, now it seems that this idea is still a bit too optimistic."

Wang Tiech looked at Xiao Heng silently, and suddenly laughed: "Young master always has a way."

"Are you so confident?" Xiao Heng smiled bitterly.

"Of course! The young master is a star in the sky. This time he descends to the earth to save all the people and the people from water and fire." Wang Tiechhui said seriously.

"Bah! Who taught you this?? I just want to take good care of the people around me, and at most those who make a living with me! I can't bear the task of saving the people with such a heavy task!" Xiao Heng frowned.

"Haha... it's not what anyone said, it's what we all think in our hearts." Wang Tiehui said with a smile.

"Tsk... Why do you think similarly to those White Lotus Sects? Your books are in vain!" Xiao Heng said angrily.

"Oh, of course I know that you may not be a star constellation that descends to earth. At least I have never heard of star constellation that can teach the magic of immortals to others at will... Even if there is, the magic is probably a trick to deceive people."

Wang Tiechui looked at Xiao Heng and said seriously: "But young master, you may not be a star, but you must not be a mortal... How can a mortal be able to tame the lightning in the sky? How can a mortal be able to bring so many of us to make progress together?"

"You don't know how much outsiders envy the people in our Qinjia Village... Do you know what the elderly in our village say? They call us the new dynasty atmosphere."

"Tsk... it's really troublesome." Xiao Heng sighed.

Once this responsibility is taken, it will not be removed.

"The new dynasty atmosphere... As long as it is not destroyed by the Mongols, nothing can be said. If you can't withstand the Mongols' attack, nothing can be said."

Xiao Heng couldn't help rolling his eyes.

"So when the spring next year, I'm going to go to the north. I'm going to see the war between the Mongols and the Great Jin Dynasty with my own eyes... and these are just for the sake of the situation."

Xiao Heng shook his pistol and said.

Of course, Xiao Heng was not just to see the true strength of Mongol Yuan, but also to do something else in the battle between Mongol and Jin, such as... Rescuing His Royal Highness the Princess's parents who were still trapped in Dajin.

In addition to collecting intelligence, Bai Sanshui and others went to the outpost established by Dajin in the north to collect information.

"The war between the Mongol Yuan and the Great Jin..." Wang Tiechu frowned and looked at the pistol in Xiao Heng's hand, "...Is this a little bit too much?"

"Well, then I'm going to take the Sea King of Hell over there." Xiao Heng said.

"The King of Hai Yan can't hit Zhongdu even!" Wang Tiechui said worriedly.

"Of course I can't fight, but I can help Haijin Town. If something happens, we will be safe." Xiao Heng said.

This Haijin Town is the closest seaport to Zhongdu. In addition to Zhongdu's stronghold disguised as a warehouse, Haijin Town is the second important stronghold established by Xiao Heng in the north.

"But what should I do if this distance is in the middle?" Wang Tiechui is quite familiar with geography, so he probably knows the distance between Haijin Town and Dajin Zhongdu.

"Um...grenade?" Xiao Heng thought about the journey from Zhongdu to Haijin Town, thinking about what they should do if something went wrong and was chased by the cavalry.

If a grenade is used, the power of the black powder grenade is definitely insufficient.

And nitrified cotton... there seems to be no precedent for using nitrified cotton to fill explosives in later generations.

As for the reason, it seems that nitroscopic cotton is a "emitter" and cannot be used as a "strong explosive". The deeper level seems to be related to the speed of the explosion reaction.

Can you continue to produce another kind of explosive? At present, no matter whether it is picy acid, tnt or black Sorkin, Xiao Hengke has no production conditions.

The only condition for production is nitroglycerin... This thing is not very stable, and producing this thing is not much different from killing life.

While thinking about this, Xiao Heng's eyes suddenly flew over the filled copper shell bullets on the table and the barrels that Wang Tiech took back.

Xiao Heng slapped his head, picked up a fixed ammunition and a gun barrel and laughed - why do you think about the deadly thing nitrifying glycerin? Isn't Bobosha fragrant?
Chapter completed!