"As for the advantages of rifled guns, they are as obvious as the disadvantages. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 "The spiral rifling allows the projectile to rotate and fly steadily in the air, improving the accuracy and range of the projectile, which can be increased from 100 meters to 500 meters, and basically can be targeted - provided that the target can be seen with the naked eye." And the smoothbore gun can only try its luck if it exceeds a hundred meters, and God knows where the bullets will go. But rifling also had side effects, the bullet had to be embedded in the rifling, which was time-consuming and laborious to load, and early rifled guns even had to carry a mallet with them and knock the bullet into it by striking the ejector lever. Although the accuracy and range of the smoothbore gun are much lower than that of rifled guns, they can be compensated for by the number and density, and the cost is low and the loading is more convenient. ”

"Five hundred meters? Is there such a power in the rifling of the root? OMG. Xia Nan stammered, "But the bullet still has to be knocked in, and the reloading speed must be infringingly slow, it seems that it is impossible for the line infantry to use rifled guns?" ”

Lin Weiye nodded: "Before the industrial level developed to a certain extent, front-loading rifled guns were only used by a small number of special troops, and could not be used for line infantry, otherwise they would die miserably if they were shot in line." The simplest is the most practical, and in our lifetime, smoothbore guns and even smoothbore guns will be the mainstream. ”

"Why don't you get a few rifled guns? It's like building a rifled gun by hand. Xia Nan asked, "You can double the range by pulling the rifling, and it's fun to think about it." ”

Lin Weiye spread his hands speechlessly and explained: "Cannons and guns are two different things. As you know, our barrels are made of wrought iron, that is, mild steel, which is relatively soft and capable of pulling rifling; But the material of the cannon is cast iron, which is much harder than mild steel, and if it is purely handmade, what tools do you use to draw rifling? Besides, because of the rifling, it is difficult to load the shell, and even if it is forcibly loaded, in the process of loading, the rifling will quickly wear out due to the violent friction between the shell and the inner wall of the barrel. There is also a possibility, the shell is no better than the bullet, there is a propellant inside the projectile body, what if you hit it with a hammer and it explodes? ”

"In this way, rifled guns are very troublesome to load, if it only takes a few minutes to load one bullet, unless it is equipped with an optical scope for sniper rifles, it is better to have a smoothbore gun with three rounds a minute!"

"It's not that exaggerated, and besides, we can use Mini bullets to overcome this problem to a certain extent."

Xia Nan asked suspiciously: "Mini bomb sounds familiar, what is this?" ”

"It's a long story. To put it simply, the bottom of the bullet is made hollow, and then a cork is stuffed, and the tail expansion principle is used to make the bullet with a diameter smaller than the chamber be loaded smoothly like a smoothbore gun, and the projectile body can be expanded during the firing process, and the rifling can be used to improve accuracy and range. ”

Xia Nan resisted the idea of complaining a few words, and said: "It sounds very simple, it's a matter of changing your thinking, don't tell me, I didn't make this rifled gun and any Mini bullets before, it was because there was no demand......"

"On the contrary, grenades and shrapnel can only be used in specific environments because there is no strong demand and they are not cost-effective. But the Mini bullet is indeed difficult: the problem of rifling is put aside, the Mini bullet is different from the lead bullet of an ordinary smoothbore gun, and it needs a special mold casting, first of all, the problem of lead-tin ratio. -- It is necessary to ensure a ratio of 2:1, because in this way, an alloy with moderate hardness will allow the Mini bullet to expand in the chamber and rotate under the action of rifling, and at the same time improve the air tightness -- in order to solve the problem of hanging lead in the rifling during expansion, the surface of the bullet also needs to be waxed. The second is the problem of versatility, the rifled guns and mini bullets made by different craftsmen will not be exactly the same, even if the guns and bullets made by the same craftsman will not be the same, Zhang San's mini bullets may not be able to be used for Li Si, to solve this problem, it must be grouped according to tolerance, to ensure that the size of the mini bullets in the hands of the soldiers roughly meets the requirements. ”

"Sounds like a hassle...... It seems that it can only be equipped for a small number of elite soldiers. As soon as he heard that it was so complicated to make a bullet, and that the bullet could not be guaranteed to be universal, Xia Nan immediately gave up the idea of mass-loading the Mini gun, "But what is the connection between this rifled gun and the Marine Corps?" ”

"Hehe...... Lin Weiye smiled slyly, "Connected, if you promise me to build a Marine Corps, I will make a big effort to get the Mini rifle out." ”

Fuck it, a naked threat!

Xia Nan nodded helplessly: "I will seriously consider your proposal." "Although it is not possible to equip troops on a large scale, the temptation to have such weapons cannot be refused.

At this time, the fleet had reached the vicinity of the Dagukou Fort. Although the flags of the imperial officers and soldiers were hung, such a large fleet still frightened the defenders of the fort enough, and hurriedly sent people to rush around on small sampans to ask who these people were. When they heard that it was a battalion soldier from Qionghai Town, Guangdong, the visitor subconsciously said: "Without an order from the military headquarters, the battalion soldiers are not allowed to leave the station, nor can they go ashore from Dagukou......

Huang Mengjia, who was in charge of the negotiations, impatiently pushed him, pointed to the deliberately opened gun window on the side of the battleship, and said: "We are here to fight the Tartars, and the order of the military department can be reissued, so don't be ignorant of your little pawns." ”

The visitor saw the swarthy muzzle of the cannon inside the cannon window and shivered. Although there are few decent cannons in Dagukou, I have never eaten pork and seen pigs run, such a thick muzzle, I am afraid that a few cannons can make the Dagukou Fort go up in smoke.

"Yes, yes, the little one said the wrong thing, please go ashore."

In later generations, Tianjin Port was the world's highest-level, China's largest artificial deep-water port, and the world's fourth-largest comprehensive port in terms of throughput. This time and space because of various factors, shipping is not the mainstream, the most important transport is the Grand Canal, the entire Tianjin Port except for some merchant ships, the prosperity is far less than the canal wharf not far away, the harbor seems to let the Qiong Navy fleet charter.

After anchoring and docking, the Joan navy began to disembark in an orderly manner, and Xia Nan and other leaders stood on the shore to watch their troops land.

Xia Nan looked at it for a long time and found that it was indeed a big project for a huge number of troops to leave the ship, especially the loading and unloading of 10 pounds of field guns, which was very tricky without lifting equipment. This is still the strict discipline of the Qiong Navy, in order to ensure order, change to other armies, only afraid of chickens and dogs, a day is not enough, at this moment if the hostile forces suddenly kill, come to a half-crossing attack, the landing side will definitely not be able to eat and walk.