The body of the gun is a little heavy, the launch site has already set up a shelf, and the gun is placed on the launch frame, so that the accuracy is much stronger, when Zheng Xunrui picked up the gun, he obviously felt that the weight of the gun reached at least twenty catties, such a weight, thinking about letting the soldiers hold the gun and launch, the possibility is not very large.

Because Zheng Xunrui, Bi Maokang and others were standing beside him, Bo Yu was a little nervous, and his body couldn't help trembling slightly.

"Master Bo, don't be nervous, how do you experiment on weekdays, just follow that feeling."

Zheng Xunrui's comfort gave Bo Yu a lot of confidence, he aimed at the bull's-eye and pulled the trigger.

The sound of pulleys spinning was clearly visible, and the bullets flew out of the muzzle of the guns in the explosion, heading towards the bull's-eye.

The bullet hit the target, but alas, it was not able to penetrate three layers of planks, but only two layers of boards, the bullet has not yet been deformed, but unfortunately the strength is not enough, and the cartridge case jumps out of the bottom of the barrel and jumps very high.

Zheng Xunrui still maintained a smile on his face, but he knew very well that this gun still needed to be improved, but being able to make such a gun was already a huge progress.

The first real hot weapon gun in history was born in 1835, which was invented by the American ** Colt, and also because after the emergence of primer technology, it was a revolver that appeared at that time, and then after more than 60 years, in 1889, the Mauser gun came out, and the real rifle appeared at this time.

It is now ten years of Chongzhen, but it is 1637, that is to say, because of Zheng Xunrui's crossing, the first rifle in the real sense appeared two hundred years in advance, of course, the defects are also obvious, first of all, there is no steel, only refined iron can be replaced, although the difference between the hardness and density of refined iron and steel is not very big, but the cost is too high. And in terms of heat dissipation of the barrel, there are also many disadvantages.

In any case, two hundred years in advance, the first real rifle was born. This progress can be described as earth-shattering, with such technology, Zheng Xunrui can stand alone in the world.

Improvements in detail are not particularly difficult things to do.

The price to pay is certainly not small. When Zheng Xunrui returned to Huai'an, Zheng Jinhong specially reported that the expenses of the Firearms Bureau for two months reached three million taels of silver, and no one could afford to burn silver at such a speed.

Perhaps ordinary people don't have much concept of three million taels of silver, and the silver that the capital household can store every year is more than three million taels of silver. That is to say, the expenses of the Firearms Bureau for two months used up the silver that the household could earn throughout the year, and you must know that these silvers were used to maintain the expenses of the Ming Dynasty for a year.

Zheng Xunrui doesn't care at all, he is a person who crosses, and he knows very well the money that scientific research needs, and many times the consumption in this area is a bottomless pit, which ordinary people can't afford at all, and it is precisely because Zheng Jiajun seized a lot of money that Zheng Xunrui dared to boldly relocate the Firearms Bureau.

Understand in this sense. Except for Zheng Xunrui, it is impossible for anyone else to make such a decision, not to mention that the development of firearms and artillery is regarded as a three-class affair in the imperial court. At the beginning, Xu Guangqi, as the second assistant of the cabinet, could not ask the imperial court to introduce artillery, and he still bought two Hongyi cannons out of his own pocket, which shows that firearms are not valued in the imperial court.

This cannot be blamed on the imperial court, the use of firearms. Since the Ming Taizu Zhu Yuanzhang fought for the world, it is a pity that so many years have passed, there has been no progress, the power of firearms is far inferior to the cavalry, the Ming and Houjin several confrontations, Houjin's cavalry occupies an absolute advantage, the Ming Dynasty's Shenji battalion to the battlefield, played a minimal, if it were not for the later Hongyi cannon in the battle to defend the city of Ningyuan played a decisive role, the Ming Dynasty may have abandoned firearms a long time ago.

In the eyes of the royal family, what they see is stability, that is, they can maintain their own rule to the greatest extent, and they are unwilling and reluctant to develop science and technology, so the Han nation, which has the four major inventions, has suffered a lot of humiliation for the rapid development of Western science and technology for too many reasons.

Zheng Xunrui, who crossed over, if these things happened, then he would find a piece of tofu and kill him.

Bo Yu fired ten rounds in a row, and by this time, the barrel of the gun was hot, and the green smoke could be faintly seen, which meant that the gun could not continue to fire.

The time it takes to reload and fire is one minute, which also indicates that the gun can shoot ten rounds per minute, and if some special factors are removed, at least eight rounds can be fired.

What does this mean, it means that the newly invented gun will become the dream of the cavalry, no matter how strong the cavalry, in the face of a gun with such a firing speed, charging with all its might, it means looking for death.

Of course, the strength of the bullet is still not enough, and the sound of the gear sliding is too loud, which makes people feel frightened, which is a big blow to the psychology of the soldiers.

The last bullet was only able to penetrate a single plank.

Under such circumstances, the cavalry in cotton armor would be able to withstand such a bullet.

All the planks were brought over.

Bi Maokang opened his mouth to explain.

"My lord, this research and development, the main consideration is the speed of bullet launching, the speed of loading, as for the strength of the bullet, there is no time for in-depth development for the time being, Xia Guan thought of the matter of the magazine that the adult said, if you can load all ten bullets into the magazine, continuous fire, so the power of the gun, will be unable to resist the cavalry."

Zheng Xunrui, who was smiling, shook his head slightly.

"Master Bi, you might as well slow down a little, the newly developed guns are indeed very powerful, but their problems are also obvious, first of all, it needs to be explained that in such a short period of time, the development of a new type of gun, it is not simple, your development, I am afraid to change the world."

Bi Maokang and the others were a little confused, but they all listened to Zheng Xunrui's words very carefully.

"Personally, I think guns can be improved in three ways."

"The first aspect, the problem of the gear driving the firing pin, the gear can be designed more finely, and at the same time pay attention to maintaining the lubrication of the gear, which can reduce the strength of the percussion trigger, the specific method is to apply more oil, always keep the gear smooth, this is a must be done, do not let the gear rust, then you can not pull the trigger smoothly."

"The second aspect, the thickness of the barrel can be appropriately reduced, this is of course my personal opinion, guns are different from artillery, the firing of artillery, ignite more gunpowder, produce large sparks, the heat is naturally great, but the bullet is different, the sparks will not be very large, the heat is naturally not very large, in this case, the barrel can be slightly thinner, which is not only conducive to the heat dissipation of the barrel, but also to reduce the weight of the gun."

"The third aspect, whether the hammer can be considered as a firing pin, I looked at the size of the bullet, it should be said that the primer is not very large, in this case, we can consider changing the hammer to a firing pin, you all understand a truth, a hard needle can pierce anything, but the sledgehammer can not do this, if the hammer that hits the primer is changed to a needle, I am afraid that the efficiency of the impact fire will be higher."

After Zheng Xunrui finished speaking, he looked at everyone with a smile on his face.

The truths he expounded, in a few hundred years, will be a pediatric problem, and almost any adult can understand this truth, but in this era, these views he said are the sound of heaven.

Bi Maokang and others were dumbfounded, especially the third proposal, to change the striker hammer to a firing pin, although it is very difficult, after all, the area that the striker can hit is very large, and the area hit by the firing pin is very small, which requires the accuracy of gears and other parts to be higher, but if the firing pin can hit the primer, the impact force generated is huge, so as to ensure that most of the bullets can be fired smoothly.

Zheng Xunrui was able to put forward such a quintessential opinion and suggestion after a test launch, and Bi Maokang and others didn't know what to say.

It was a long time before Bi Maokang spoke.

"My lord, my subordinates and everyone have never named this gun, so please name it."

This time, Zheng Xunrui did not hesitate.

"Let's call it a Mauser."

It is impossible for Bi Maokang and others to understand what Mauser means, Zheng Xunrui understands, he is a person who has crossed over, everything about firearms is plagiarism, and he still has a certain amount of guilt in his heart, so in the naming of the gun, he doesn't want to be different, or use the name of the Mauser.

Zheng Xunrui does not need to explain in this regard, after all, his authority in the eyes of everyone has reached its peak.

When he left the Firearms Bureau, Zheng Xunrui specially asked Bi Maokang and others.

"The development of the Mauser gun, do not need to be in a hurry, do not be afraid of spending too much silver, the silver used must be used, in addition, the research of artillery will also begin, the shell can also use the technology of primer, I think you have already thought of this aspect, I suggest that you be divided into two groups, one group specializes in the study and improvement of the Mauser gun, and the other group begins to study artillery and shells."

Speaking of this, Zheng Xunrui's expression became serious.

"There is one thing I must emphasize, that is, the issue of confidentiality, all these achievements are top secret matters, there can be no leakage in the slightest, and anyone who dares to leak it, I will not be polite."

Zheng Xunrui left the Firearms Bureau with a smile on his face, and he already saw a bright future. (To be continued.) )