Not long after, Zhu Zilong broke up with Qiangzi, Heizi and others, and they were busy with their own things for the time being.

Walking along the way, I saw an unnamed mobile phone card for sale at the newsstand along the way. Zhu Zilong walked over and bought a few mobile phone card numbers that were not real-named. Later, he asked Heizi and others to use this kind of mobile phone card to call, and the fool called with his real-name mobile phone number!

Then, as soon as the smoke was left, Zhu Zilong entered one of the county's building materials markets.

His purpose here is very simple, which is to buy various models of seamless steel pipes, and under the pretext of using various models of steel pipes as smoke bombs, plus purchase a large number of seamless steel pipes with rifled.

The rifle can be said to be the soul of the barrel. The function of the rifle is to give the bullet the ability to rotate so that the bullet can still maintain a certain direction after it is out of the bore. At the same time, because the bullet is in a direction of rotation and advancement at an ultra-high speed, it can break the air resistance and make the range of the gunpowder to produce a higher effect!

Of course, the renewal of gunpowder is also one of the ways to make bullets shoot farther. However, rifling can reduce the length of the gun, thereby reducing the weight of the gun and making it easier to use. It is better than the other party!

Although there was a record of using rifle in the 15th century, it was not popular until the 19th century due to the difficulties in the manufacturing process.

In addition, the requirements for the material of the barrel are not only hard, compressive and high temperature. Another essential characteristic is its stature, which means that the barrel must also have a certain elasticity. Otherwise, it will cause the metal to be too brittle.

In the modern 21st century, the various civil seamless steel pipes produced in 2020 are not as good as those used in military use. But compared with the gun barrel materials of countries around the world during the Ming Dynasty, it would be said that they exceeded two or three levels, which would be without any exaggeration.

Building a barrel is a fine job. It is not easy to just make a straight deep hole in a steel rod. All aspects must be taken into account, the angle of the drill bit, the speed of the workpiece rotation, the pressure of the lubricant, and even the chuck that clamps the steel rod must ensure that the steel rod and the drill bit are concentric.

To drill out a high-quality tube with a length of 24 inches, the technical content here is no worse than building a 40-storey building. At present, in the 21st century, even the world powers like San Ge have not overcome this technology. The Insas made by San Ge has killed more people because of the explosion than the gun.

Sweat! Embarrassing!

Of course, a few years ago, countries still had some regulations on the sale of rifled steel pipes, and some countries even strictly prohibited them.

However, as military research becomes higher and higher in 2020, rifled steel pipes have also begun to be used on civilian equipment.

With the word "profit", therefore, the special regulations of various countries on the sale of seamless steel pipes with rifled are almost gone.

This has brought great convenience to Zhu Zilong for purchasing this!

Well, that's all.

I'm afraid there will be some military enthusiasts and military enthusiasts netizens who will question me.

For example, one of them will point out to my above content that the ammunition and rifled barrels in the Ming Dynasty were not matched.

Indeed, the history of rifling is quite long and has appeared in the fifteenth century, but it was not until the nineteenth century that the various teams were equipped on a large scale.

Research the reason, that is:

During the Ming Dynasty, the clamps and flintlocks used by countries in the East and the West were all front-loaded guns. The bullets were lead balls or metal balls!

The trouble of loading a gun in front is that the projectile must be embedded in the rifle entrance of the barrel in front to rotate in with the rifle. This makes loading of the rifle of the front rifle is very laborious, and soldiers often need to use a hammer to knock on the bullet rod to load the projectile into the barrel.

The firing speed is therefore reduced to one-third of the smoothbore gun or even slower. Such a low firing rate is intolerable to the army.

So in the two hundred years after the invention of rifle, rifle was only a supporting role in the army. Until the French Orleans Hunter Captain Claude Etienne Minié invented the Miner bullet in the mid-19th century.

And to put it bluntly, this kind of Minie bullet is for a time traveler standing on the huge shoulders of history.

In fact, it is easy to create by yourself. It’s like if you know your bank card password, why bother to try it one by one?

The lead bullet is soft, just like an air gun bullet. As long as it is not made into a pure round shape, the back is empty, and with a little cork, the lead metal bullet will naturally rise when the gunpowder burns, filling the gap.

The size of the bullet made by the manufactured bullets is that the semi-circular pointed shape in the front and semi-hollow in the back can be stuffed with cork, which is slightly smaller than the mouth force of the rifled barrel. I didn’t say that the round bead bullets from the Ming Dynasty must be 100% used!

Of course, such bullets are more troublesome than those directly using round beads, and may be a little slower than pure round bullets in terms of output and time.

However, if you work slowly and meticulously, you either don’t take action, and you will make a splash as soon as you take action.

Just be different!

After all, science is the primary productive force, isn’t it?

Soon, Zhu Zilong bought a large number of seamless steel pipes and rifled steel pipes in a mixed manner.

I didn't rush to ask someone to deliver the goods to my door, but instead rely on my familiarity with my hometown and county town. I came to a place by the mother river in the county town, where there was a shipyard.

Of course, it is impossible to build a factory such as warships, but just a fishing boat.

He heard people chatting at the market where the steel pipe purchases said that there were a few fishing boats of 50-100 tons that had just been built, as well as sand transport boats and semi-cargo ships for sale because something happened to the owner's house.

A 100-tonnage ship may be a bit troublesome to operate alone, but if it is only about 50-tonnage.

Fishing boats or semi-cargo ships of this level are usually only more than 20 meters long, more than three meters high, and more than three or four meters wide. They are often equipped with two or three drivers, but if they are skilled and cannot go out of the ocean, they can often see scenes where one person will use them.

Sometimes if the wind is calm, it is also feasible to go out a slightly far-off ocean area.

It just meets Zhu Zilong’s current requirements!

What, what do you ask for?

Of course, one can load more goods, and such a fishing boat can load more than several trucks.

The second is that Zhu Zilong made the position of the teleportation exit this time deviated by dozens of miles, which was really scared. He was very suspicious that when he bought the things and returned to the Ming Dynasty, he might be at the exit of the teleportation array near the Ming Dynasty beach, and he would go to his grandma's house.

Even if it is a result of neither good nor bad, there is only a 50% chance. This time the exit may be on the sea surface of the Ming Dynasty. After all, the beach is far from the sea surface, but it is a neighborhood relationship.

If the exit of the Ming Dynasty really tilted to the sea, would you let Zhu Zilong drive a big Dongfeng truck into it?

Isn't this Nima so cheating?

It is estimated that just a few seconds later, the truck sank all the goods into the sea. It took a vacancies to travel through time and waste NNNN's 10,000 RMB, maybe he had to drown himself.

So, Zhu Zilong decided.

In the future, when transporting goods back and forth, prepare the truck and fishing boat at the same time, use which one is convenient.

Anyway, it is just that the teleportation array of the Moonlight Treasure Box is opened not far from the bow of the boat. Because of the suction force and the engine push, a straight line moves forward, and the driving technical content of the fishing boat is really not high.

This is not a big deal!
Chapter completed!