It didn't take long for Zhu Zilong to break up with Qiangzi, Heizi and others, and went their separate ways for the time being.

Walking along the way, he saw that there were anonymous mobile phone cards for sale at the newsstand along the way, so Zhu Zilong walked over and bought a few mobile phone card numbers that did not have his real name recorded. In the future, when looking for sunspots and others, they will use this kind of mobile phone card to make calls, and the fool will use his real-name mobile phone number to call over!

Then as soon as he left a cigarette, turned a few corners, and Zhu Zilong entered one of the big building materials markets in the county.

The purpose of his coming here is very simple, that is, to buy various types of seamless steel pipes, and under the pretext of using various types of steel pipes as smoke bombs, plus to buy a large number of seamless steel pipes with rifling.

The rifling can be said to be the soul of the barrel, and the role of rifling is to give the warhead the ability to rotate, so that the warhead can still maintain a given direction after being discharged. At the same time, because the bullet is in the direction of ultra-high-speed rotation, it can break through the air resistance, so that the range is on the basis of the same gun gunpowder, and the effect is on a higher level!

Of course, the replacement 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. Better than each other!

Although rifling was used in the 15th century, it was not until the 19th century that it became widespread due to the difficulties of the manufacturing process.

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

In the modern 21st century, the various civilian seamless steel pipes produced in 2020 are not as good as the military. But if you compare the barrel materials of various countries in the world during the Ming Dynasty, it is said that it exceeds two or three grades, and there is no exaggeration at all.

Making a gun barrel is a delicate job, and it is not easy to make a deep straight hole in a steel rod. To do it, you have to take into account all aspects, the feed angle of the drill bit, the speed of the workpiece's rotation, the pressure of the lubricating oil, and even the chuck of the steel rod must ensure the concentricity of the steel rod and the drill bit.

To drill a 24-inch-long high-quality pipe, the technical content here is no worse than building a 40-story building. At present, in the 21st century, even the world powers like the third brother have not conquered this technology, and the third brother's self-made Insas has killed more people because of the bombing than this kind of gun.

Sweat! Embarrassment!

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

However, with the increasing military research in 2020, rifled steel pipes have also begun to be used on civilian equipment.

As a result, the special regulations of various countries for the sale of rifled seamless steel pipes are almost non-existent.

This has brought great convenience to Zhu Zilong's procurement!

Well, speaking of which.

I'm afraid that some military enthusiasts, as well as military enthusiast netizens, will question me.

For example, one of them will point out to me above that the ammunition of the Ming Dynasty did not match the rifled barrel.

True, rifling has a fairly long history, having appeared in the XV century, but it was not until the XIX century that the armies of various countries were massively equipped.

The reason for this is because:

During the Ming Dynasty, arquebuses and flintlock pistols used by Eastern and Western countries were front-loading guns. The bullet is a lead ball or a metal ball ball!

The trouble with the front-loading gun was that the projectile had to be embedded in the rifling inlet of the front barrel in order to rotate with the rifling. This made the loading of the front-loading rifled gun very laborious, and the soldier often had to hit the feeding stick with a hammer to load the projectile into the chamber.

As a result, the rate of fire was reduced to a third or even slower than that of a smoothbore gun, and such a low rate of fire was intolerable for the army.

So for two hundred years after the invention of rifling, rifled guns were only a supporting role in the army. It wasn't until Claude Etienne Minié, captain of the Orleans Chasseurs of the French army, that the Minée bullet was invented in the middle of the XIX century.

And this kind of Migne bullet, to put it bluntly, is for the traverser who stands on the huge shoulders of history.

In fact, it is very easy to create it yourself, just like my brother knows your bank card password, so why bother trying them one by one?

Lead bullets are soft, like airsoft bullets, as long as they are not made to be purely round. Let the back be empty, add some cork, and when the gunpowder burns, the lead metal bullets will naturally open and fill the gap.

The size of the bullet made makes this lead bullet with a semi-circular pointed shape in the front and a semi-hollow in the back that can be stuffed with cork, which is slightly smaller than the rifled barrel. I didn't say that I had to use 100% of the ball bullets from the Ming Dynasty!

Of course, such a bullet is a little more troublesome than a direct ball form, and may be a little slower in terms of production and time than a pure round bullet.

However, slow work and careful work, either you don't make a move, or you have to make a splash as soon as you make a move.

Be different!

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

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

I didn't rush to ask someone to deliver it to my door, but relied on my familiarity with my hometown county. I came to a place by the mother river in the county seat, where there was a shipyard.

Of course, it can't be a factory that builds warships or anything, just the kind that builds fishing boats.

When he heard people chatting at the market where he bought steel pipes, he said that there were several fishing boats of 50-100 tonnage, as well as sand carriers and semi-cargo ships that had just been built because something had happened to the owner's family.

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

Fishing boats or semi-cargo ships of this level are generally only more than 20 meters long, more than 3 meters high, and more than 3 or 4 meters wide. There are two or three drivers on the standing, but if you are skilled and can't go to the ocean, you can often see a scene where one person will use it.

Sometimes, if the wind is calm, it is possible to go out a little further into the ocean.

Just in line with Zhu Zilong's current requirements!

What, you ask, what does it meet for him?

Of course, one can carry more cargo, and such a fishing boat can carry more than several trucks.

The second is that Zhu Zilong really frightened the deviation of the location of the teleportation exit this time by dozens of miles. He was very suspicious that when he bought his things and returned to the Ming Dynasty, maybe he would go to his grandmother's house at the exit of the teleportation array near the beach of the Ming Dynasty.

Even if it is a bad or bad result, there is only a 50% chance that this time the exit may be on the sea surface of the Ming Dynasty. After all, the beach is close to the sea, but it is a neighbor.

If the exit of the Ming Dynasty is really crooked to the sea, is it possible that you let Zhu Zilong drive a Dongfeng truck to rush inside?

Isn't this a super pit daddy?

It is estimated that just a few seconds later, the truck sank into the sea with all the goods. Bai crossed once, wasting NNNN 10,000 yuan, not to mention, maybe he would have to drown.

So, Zhu Zilong decided.

In the future, the goods will be transported back and forth, and the truck and fishing boat will be prepared at the same time, whichever is convenient will be used.

Anyway, it was not far from the bow of the ship to open the teleportation array of the copycat moonlight treasure box, because of the suction, plus the engine pushed. Moving forward in a straight line, the fishing boat's driving skills are really not high.

It's not a big deal!