If Yu Xiaotian still wants to increase the effective range, he can only increase the amount of gunpowder and increase the length of the barrel, but in this way, the recoil will be greatly improved, and it will be difficult for people with a slightly thinner body to effectively control this kind of firecracker, if the length is increased too much, it is not easy to walk, and at the same time, it also increases a lot of weight, and it is difficult to ensure shooting accuracy when shooting without support when using it, so these two methods are not very suitable methods, after all, this kind of gun barrel is a front-loading smoothbore gun.

The most effective solution is to draw the rifling wire out of the inner chamber of this gun tube, so that it can be converted into a front-loading rifled gun, so that the projectile is embedded in the rifling, and the chamber wall is closely combined, which can effectively hold the gas, reduce the amount of degassing of the combustion gas, and make full use of the explosive power of gunpowder, so that the shooting accuracy will be greatly improved at the same time, the bullet can also obtain higher muzzle velocity and kinetic energy, and greatly improve the range.

But if you do this, not to mention the difficulty of rifling the technique, this is not impossible to solve, if you really want to make a rifled gun, then the first thing to solve is the problem of loading.

The most important problem is that the bullet of the early rifled gun is difficult to be put into the barrel, and the musketeers who used the rifled gun in the early days sometimes have to hit the cane with a hammer to knock the projectile into the barrel, which is extremely inconvenient to use, and there is a certain degree of danger, resulting in the user sometimes facing the inability to put the bullet into the barrel, which makes it very embarrassing.

Therefore, if the rifled gun is manufactured, the first problem to be solved is the problem of loading the projectile, if the projectile is large, it may not be able to fit into the barrel, and if it is small, it will not be able to effectively combine the projectile with the rifled gun, resulting in an increase in the amount of degassing and the loss of the advantage of the rifled gun.

So far, when it is impossible to produce breech guns, and if modern bullets cannot be effectively manufactured, the only solution to this problem is the use of Mine.

Speaking of Minne, in fact, we must first talk about the Minne rifle, the Minne gun is actually a breech-loaded rifled flintlock pistol, the Minne bullet is actually a round-headed cylindrical lead bullet, the diameter of the lead bullet is smaller than the caliber of the breech, and when it is put into the chamber, it avoids the embarrassment that the projectile is too large to be stuffed into the chamber.

And there are threads on the body of the Minne bullet, the tail is hollow, and the cork is stuffed inside, when firing, the gunpowder deflagration pushes the cork, causing the expansion of the projectile body, effectively making the bullet body and the rifled wall closely fit together, which plays the role of air closure, so that the bullet obtains greater kinetic energy and muzzle velocity, and at the same time, the round-headed cylindrical lead bullet rotates in flight, which can effectively play the role of stabilizing the trajectory and improving the accuracy.

In this way, rifled guns were gradually accepted, and they began to equip many armies in the world in large quantities.

So Yu Xiaotian has a way to solve this problem, now what he hopes most is to get a weapon that is beyond the times, but he must be able to use the current level of skill and technology, which can be effectively produced, he is not so ambitious that he plans to ascend to the sky in one step and directly create a big killing weapon like AK47, as long as he can make a Mine gun, he is very content.

In this era, there is no need for the technique to be too advanced, only the technique is half a step forward, which can effectively play the role of defeating the enemy.

At present, Blacksmith Zhang has basically figured out the technique of making ordinary smoothbore gun barrels, and the next step is to gradually familiarize himself with and train more craftsmen.

Then he only needs to solve the problem of drawing rifling, and by solving this problem again, he can obtain a weapon that is beyond the level of skill of this era.

As for the firing mechanism of the musket, Yu Xiaotian didn't think too much about it, the flintlock pistol could still be solved by the craftsmen at present, as for the fire cap gun, the firing pin gun and even the full-loaded metal cartridge bullet, he didn't think about it.

Because in order to achieve that level of technology, it is necessary to make a breakthrough in the chemical industry, and at least it is possible to produce nitric acid.

Although Yu Xiaotian Chemical is also OK, but to let him establish a chemical industry system now, it is very unrealistic, to build such a chemical industry system, the scope involved is too wide, the technology required is also very high, the danger is also very great, not to mention pollution, he only knows the principle, but he does not know what to do.

So at the moment, he didn't dare to think too much, and he could only rely on the techniques that could be achieved in the current era to promote the development of weapon techniques.

Then the only option left is to make a flintlock pistol.

After Yu Xiaotian saw the results of various experiments on this gun tube created by Zhang Blacksmith, he did not let Zhang Blacksmith immediately start the experiment of drawing rifling for the gun tube for the time being, but greatly praised Zhang Blacksmith and asked him to continue to build this gun tube, stabilize the process as soon as possible, and improve the yield rate.

And then the next step is to train more apprentices, increase the number of production, and equip it for the use of the sea wolf people, as for the firing mechanism, Yu Xiaotian has actually discussed the firing mechanism of the flintlock pistol with Blacksmith Zhang, and is ready to use the old-style arquebus firing method after the successful trial production of the gun tube, and completely abandon the firing method of arquebus ignition.

In this regard, Yu Xiaotian took some sketches of the flintlock firing mechanism according to his own knowledge, just a sketch, and told the principle of the flintlock mechanism to Zhang Blacksmith, and asked Zhang Blacksmith to design and trial production by himself according to the sketch and principle, and now Zhang Blacksmith has no time to do this, but after having the schematic, with a workaholic like Zhang Blacksmith and an iron idiot, it must not be difficult to solve.

Although Yu Xiaotian always feels like he doesn't wait for me sometimes, but the advancement of the technique always needs a process, and he can't eat a fat man in one bite, unless he crosses over, he brings a few lathes and a large number of technical data drawings, otherwise, any bit of technical advancement and breakthrough must be carried out by people to carry out a lot of testing and exploration.

Blacksmith Zhang saw that Yu Xiaotian was very satisfied with the gun pipe he had built with his own hands, and he was naturally very happy in his heart, the biggest reward for them like him was not necessarily a monetary or material reward, but they were most happy that someone appreciated their craftsmanship and works, which could make them truly satisfied.

Yu Xiaotian understood the thoughts of people like them very well, so he didn't give him too much reward, but in terms of words, he gave him high praise, which made Zhang Blacksmith grin, and a childlike smile appeared on his swarthy face, which made Yu Xiaotian feel that this guy's smile was very cute and cute.

(Anyway, the burn has finally subsided, and I don't know if the road will continue to burn at night!) But let's update it first! After all, I promised two shifts a day this month, and if I can hold on, I will insist! I hope the brethren will continue to support! It's not easy for us to code words! Some time ago, a certain website said that a writer suddenly died at home, and was found two days later! I hope that doesn't happen to me! ）