The madman looked at Xiao Chen as if he had seen a ghost.

With his character, even if he really saw a ghost, he probably wouldn't be so surprised.

"But it's already remarkable." Xiao Chen thought that the madman was unhappy, and hurriedly made up for it, "With the existing technology and materials, you can make such a precise gun, madman, you are definitely a veritable masterpiece." ”

"Can it be better?" The madman's words are not a contest, but from the heart.

"Of course you can, first of all, it's best to use stainless steel to stamp, one-piece molding, and you don't have to roll other alloys in it......" Xiao Chen sat down and picked up a straw stick and drew a barrel on the sand.

"It's not difficult to cast steel in one piece, but how to draw the rifling inside? Or is rifling no longer necessary? The madman sat down across from him and questioned.

Steel is by far the hardest material available, and it is impossible to cut rifling into it.

"Of course, there must be rifling, otherwise the projectile will not be able to rotate in a straight line, so that the accuracy and range will be greatly affected, such as the current musket, it is necessary to increase the amount of gunpowder to increase the range, otherwise it will not be far...... There is another way to get the rifling out, which is called the mold extrusion method......"

Xiao Chen drew a drawing mold similar to a drill bit as he spoke, and the big guys were curious, so they all came over, but except for the madman, no one could understand what this thing was?

The die extrusion method, also known as the overhead pulling method, is a rifling manufacturing process that only came out in the 20th century.

The specific method is to first make a solid barrel, drill a smaller hole at one end of it, and then use a high-hardness drill bit with a protrusion corresponding to the rifling wire, drill down the hole with a high-pressure machine, and extrude the steel into yin and yang rifling.

Theoretically, there is no problem, but first of all, how do you make this drill bit that is harder than steel? Secondly, how much pressure does it take!

Unless you move a small mountain of rocks, you have to turn it around, and you have to turn it fast enough......

"So if you want to make this kind of barrel, you need to make a stamping machine first, and there is no electricity at the moment...... But we can use hydraulic power and some gears to do it, this is quite complicated, I won't draw it now, as for the drill bit, you can use alloys, of course, this also needs to be done with a high-temperature casting furnace first......"

Xiao Chen said seriously, the madman listened carefully, and the two of them were completely immersed in science and couldn't extricate themselves.

As long as the casting process is improved, the barrel can also be cast using alloys, reducing its rigidity and increasing its plasticity during the casting process.

The drill bit is made of the hardest material, and with the highest speed that can be theoretically achieved, it can be rifled.

With perfect rifling, the lead bullet can also be made into a copper core, so that the weight of the projectile can be reduced a lot, the range and lethality can be greatly improved, and the amount of gunpowder used can also be greatly reduced.

Xiao Chen also came up with an idea that would sound extremely magical to a madman, and that was to use something called a cartridge case to launch a projectile.

A certain amount of gunpowder is added to the cartridge case, and then some sensitive ignition is compacted at the bottom, and a firing pin is installed behind the breech.

In this way, as long as the firing pin hits the rear of the cartridge case, the primer can be ignited, and the primer will detonate the gunpowder, and the strong impact force can push the projectile out.

This is the prototype of the modern firearm, a revolution in gun technology that spans centuries.

From the oldest breech guns, which required a strip to press gunpowder, they crossed the flintlock pistol and went straight to the most advanced technology.

It makes the madman a little unacceptable for a while.

"Of course, this is not something that can be done in a year or two, and we don't have such a delicate craftsmanship now, it's just my whim." Xiao Chen sighed, all he said was theory, in fact, with the current industrial level, it was far from being able to do this.

But being able to put forward such a theory is already very, very remarkable, at least in the opinion of a madman, Lord Xiao Chen Xiao is a god-like existence!

From now on, I'm crazy to follow you!

I don't want anything, as long as you have nothing to do and can talk with me for a while, I'll be satisfied.

In other words, looking at the whole world, there is only Xiao Chen who can make a madman sincerely admire and revere him as a god-like idol.

That's the power of science!

Lu Fei brought two carts, and Wen Shanchang also followed, and checked Duan Ling'er's injuries first, and there was no major problem.

But after seeing Fu Yan's wound, he couldn't help but stick out his tongue, this brother is really awesome, you are still running thousands of miles with such a fatal wound?

It's a medical miracle that you didn't die, but along the way, you lost too much blood and all the organs in your body began to show signs of failure, and according to common sense, you are still certain to die......

I'm lucky to meet me, it's your fate!

opened the medicine box, washed his wounds with medicinal wine, stripped off the rotten meat, and directly stitched it up with needles and threads, because Fu Yan's body organs were already quite fragile, so he didn't dare to use anesthetics.

Just let Fu Yan endure a little.

And Fu Yan is really an iron man, from beginning to end, he gritted his teeth and never said a word!

The big guy is very impressed.

"Brother Fu, if you have a lot of pain, just call it, it will be better to call it out, it's all your own people, what's so embarrassing?" Duan Ling'er panicked for him.

"Why don't I find one for you and bite the wood? If you accidentally bite your tongue off, it's terrible. Tie Kunlun found a piece of wood and tried to stuff it into Fu Yan's tightly closed mouth.

"Oh, this is really a soft knife to cut meat, I'm afraid it will hurt people to death, if it were me, I might have cried my father and called my mother, Brother Fu is really an iron-clad man!" Lu Fei gave Fu Yan a thumbs up.

But Fu Yan closed his eyes, clenched his teeth, and didn't say a word......

"Don't shout, he's fainted." Smell the good and slow way.

Oh......

The big guy suddenly realized, no wonder he didn't say a word.

When Fu Yan woke up, he found himself lying naked on the soft bed, and the bed was still flickering, it turned out to be a walking cart.

There were two beautiful women beside the bed, one was wiping his body with a soft towel, and the other was decocting medicine on a charcoal brazier.

Seeing him wake up, they showed a beautiful smile together.

"I'll do it myself!" This was the first thing Fu Yan said.

After all, it is too embarrassing for a big man to be naked in front of two beauties, and the most embarrassing thing is that the beauty is wiping his most unsightly parts!

"Mr. Fu, don't move, I heard that the doctor said, if your wound is stretched again, it will be bad!" The round-faced beauty who wiped his body hurriedly held him down as he tried to get up, and his hand was quite strong.

"We are nurses in the army, and we are responsible for taking care of the wounded soldiers, in fact, we are also half doctors, and you don't have to be embarrassed if you are sick." The melon seed-faced beauty of the decoction smiled.

"But......" Fu Yan's white face turned red, and he was speechless in embarrassment.