After sending the letter out, Hao Fenglou was still a little irritable.

In fact, he had the idea of tossing out a rotating firearm at the beginning, this idea came from some kind of YY, thinking that although he was powerless, but in the future, he was facing the enemy, and someone on the opposite side rushed towards him with a machete, and he pulled out the firearm in a dashing manner, and fired five shots in a row, bang...... The cloak is raised, the mouth is blown, and the face is full of loneliness.

With this idea, I want to put it into practice, in fact, the structure of the revolving firearm is the simplest, and with the help of the runner firecracker, first lay the foundation of the flint firecracker, and in the future, the arquebus firearm can be improved into a flintlock firecracker, but Hao Fenglou didn't expect that he would ignore one of the most critical issues, that is, the range of the firecracker.

Because this kind of firecracker tube is short, the biggest feature is that it is easy to carry, so the firing range is outrageously low, it is only less than ten meters, and the effective firing range is only six or seven meters. The crux of the problem is still in the rifling, to know that the revolver of later generations is rifled, although the mouth is short, but because of the role of rifling, the bullet rotates rapidly by explosive force when firing, which greatly strengthens the thrust of the bullet and greatly improves the accuracy, so the general revolver can theoretically reach a distance of fifty steps, and fifty steps is enough to become a sharp weapon.

Hao Fenglou ignores this rifling, if Hao Fenglou's improved firebolt greatly improves the smoothness of the inner wall of the firebolt, making the rough firebolt become a real smoothbore gun, it can be said to be a qualitative leap in the history of the Great Ming Flame Gun, then if the rifling can be applied to the firebolt, it will be a qualitative leap.

However, if you want to get rifling in the long gun that is nearly half a foot long, at the current level of the camp, I am afraid that it will be very difficult. Because the tube is already slender, coupled with the long and narrow part, the difficulty of the process increases exponentially. But what about the short guns of the wheel? This seems to be a lot less difficult.

Hao Fenglou pondered in the study for a long time, and couldn't sit still, because his eyes fell on the secret book in the palace again, the secret book had been torn apart, Hao Fenglou threw them into the incense burner, and the incense burner suddenly burst into flames.

"It's a little too late, so it's better to take precautions. Although the emperor and the master are extremely smart, they are certainly full of confidence, but who knows if the Dao will be a hundred secrets, if they can use the wheel fire gun as soon as possible, they may be able to prevent it. ”

Come to think of it. Hao Fenglou cheered up and hurriedly walked out of the study. Outside the study, a servant of the house trotted up. said: "Master, please come over." ”

Hao Fenglou shook his head and said: "I have something to do here, you go back and tell the master, just say that I will listen to his teachings tomorrow, you go to the stable to prepare the horse now, I want to go out of the city." ”

The servant hesitated, but hurried away.

Hao Fenglou, the prospective groom, rode out of the city on horseback. Arrived at the camp with a familiar car, in fact, before that, the camp had already received a letter from Hao Fenglou, and some of the leaders of the craftsmen gathered in the Baibao Building. Hao Fenglou's so-called rifling process is being negotiated.

Baibaolou is the meeting hall of craftsmen, the carpenters spent two months of effort, spent a lot of manpower to build, generally encountered some major events, some skills or higher status craftsmen will gather here for consultation, each meeting here will have a special scribe record, and then archived, can be used as some reference in the future.

More than a dozen respected and skilled blacksmiths gathered together at this time to analyze the principle of rifling, the rifling is spiral-shaped, the effect is actually to jam the lead bullet, the lead bullet after suffering the huge thrust of gunpowder, then it will rush forward along the rifling, in the process of producing a certain inertia, the most rear-back lead bullet is shot out of the fire gun in a rapid rotation way, thus greatly improving the accuracy and impact force and inertia.

The so-called 'principle' written by Hao Fenglou in the strip is actually understood by everyone, but the problem is that it is obviously not easy to make rifling on the inner wall of the firecracker.

After everyone got together to discuss, the final conclusion was that there are only two ways to make rifling, one is the so-called casting mold, the other is the file, the former is difficult, although the skill of casting the mold has been very high, but to make the rifling texture on the mold, it is really unsatisfactory; As for the latter method, it is a stupid way, and the rifling is directly planed out by hand, which not only makes the rifling uneven, easy to error, but also time-consuming and labor-intensive.

After the discussion, there was no result, and the room fell silent; And at this time, Hao Fenglou arrived.

Hao Fenglou didn't say anything, and came up with a plan straightforwardly, directly ordering someone to create a hook-shaped cutter, and then using a rotating method to probe into the pipe, this method is like a bottle cap in later generations, and the bottle cap is tightened by rotating the method.

The method is very simple, and it is very feasible, the early American colonists used this method to make the chamber, the tool is very simple manual wooden machinery and cutting knife, those colonists who basically did not have many mechanical tools can make it themselves, and the camp here is obviously much better than the colonists at that time, after Hao Fenglou came up with the plan, everyone immediately began to do it, first let the carpenter make a simple wooden machine tool, and then make a spiral cutter with a hook, someone fixed the cutter on the wooden machine tool, Experiments were carried out with a firecracker, and sure enough, a rifling with almost no error was formed inside the firecracker.

After shaking off the iron filings one by one, reapplying lard and other lubricating materials, and wiping it with a cloth plug stuffed with cotton cloth to make sure that there were no defects, the next problem to be solved was to make lead bullets that fit the rifling.

Because of rifling, so there is the concept of bullets, bullets must fit with rifling, otherwise it is easy to be stuck by the firecracker, fortunately, Hao Fenglou does not expect to be able to manufacture exquisite bullets in later generations, only hope to make a solid lead bullet that fits the rifling, the requirements of the process are not too high, several casting masters began to model after accurate calculations, poured lead water, cooled, lead bullet molding.

A real wheel firearm fell into Hao Fenglou's hand, Hao Fenglou seemed quite excited, after ordering someone to load the ammunition, holding a heavy wheel, Hao Fenglou had a feeling of returning to the past.

He arrived at the school grounds, countless craftsmen and firecrackers also gathered around, Hao Fenglou directly pressed the trigger, the trigger moved, the firing pin behind the firecracker slammed into the flint trough, the gunpowder in the trough suddenly slammed loudly, the huge white smoke swelled out, the lead bullet aimed at the rifling was pushed by a huge force, quickly advanced along the gun, with the spiral rifling line rotating rapidly, the last like a fire snake spewed out the gun, directly towards the target.

Then...... Didn't hit!

The target did not move a bit, and as for where the lead projectile went, only God knows.

Hao Fenglou was embarrassed, and called Liu Yang, a hundred households of the fire pistol, and said, "You can try it." ”

This Liu Yang hurriedly responded, couldn't bear to look at the embarrassment on Hao Fenglou's face, took the wheel firecracker, dialed the wheel, and after standing still, shot towards the target.

Bang......

The wooden target immediately pierced and smashed.

Liu Yang said: "The total distance from the target is twenty steps, and twenty steps can penetrate the wooden target, which is indeed more than twice as sharp as Fang Cai." ”

Hao Fenglou said: "You calculate how much effective range you can have." ”

Liu Yang nodded, continued to retreat, shooting, after shooting, recorded the data, and then took ten steps back, shooting, until the gunpowder and lead bullet in the runner were all shot, he took the data and muttered for a while, and came over to Hao Fenglou and said: "My lord, the effective range should be about thirty steps, close to the distance of ten to fifteen zhang, but even within fifty steps there is a certain penetrating power, but more than thirty steps, the accuracy may not be accurate." ”

Thirty steps is a qualitative leap compared to the first ten steps. The later generations of the wheel gun is roughly about fifty paces of range, the wheel gun is not necessarily the pursuit of the maximum range, after all, no matter how the short gun is, it is impossible to compare with the long gun, if the bird gun is the two armies against each other, against the cavalry weapon. Then now the short gun in Hao Fenglou's hand is an artifact in a fierce battle or a short encounter, in the melee, your enemy is only a dozen meters away from you, they rush towards you, you raise your hand, directly put him down, this feeling must be very happy. And although it is more troublesome to reload the gunpowder with the Wheel Gungun, after all, you have to reload five rounds at a time, but don't forget that once loaded, you can hit five times in a row, and you can fight in ordinary skirmishes, just be afraid that your ammo will be over before you run out.

This is definitely a huge advantage, and it is also very versatile, Hao Fenglou smiled, and called Hao Sandao: "Just use this method to make a batch of wheel firearms, the fastest speed, can you get it before the young master gets married?" ”

Hao San scratched his head and said, "Unless you put everything else down, this short gun is too cumbersome to make......

Hao Fenglou said: "It's decided, the others will be put down in advance, and the fire guns that have been made will immediately let the fire guns team practice, let them get acquainted with it, without further ado, start now, you don't have to look embarrassed, if it's not difficult, what do I want you to do?" To tell you the truth, your young master may not be able to be peaceful when he gets married, if something really happens, we have to have the power to protect ourselves, these short guns are our trump cards, understand? ”

When Hao San heard this, he immediately knew that it was amazing, and hurriedly said, "Yes, yes...... Young master, you can rest assured to enter your cave room, and leave the rest to me. ”

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Chapter 2 is delivered. (To be continued......)