Yongxing City used copper as raw material to create two large-caliber unconscionable mortars. Mortar generally refers to a thick and short gun with a small ratio of length to diameter, fired at an elevation angle, usually with a large caliber, but a very short barrel and an average range, which is the prototype of an early howitzer.

Due to the defect of the residue of black powder, it will be difficult to remove the gunpowder residue in the rifle gun when firing at a large elevation angle, and the reloading time will be greatly increased, so the mortar with a smaller elevation angle than the length diameter ratio fills the role of the early grenade, and the tube body is shorter, and the elevation angle is larger and easier to clean.

The Hudun cannon of the Qi family army in the Ming Dynasty was also a kind of portable mortar cannon at that time, and the conscienceless cannon was essentially a kind of mortar fire fired from the breech.

The reason why copper is used instead of platinum-based copper-nickel-iron-based alloys is that the latter is costly and has a long production cycle and a high defective rate.

The second is the technical process, the purpose of Bailiyan production of unconscionable guns is to balance the range, cost, power, safety and transportation, so more large copper blocks are used after repeated forging, heated to red, sent to the large forging die through several times of deformation and stamping, and finally on the lathe to turn the burr.

The ductility of copper is excellent, the machinability after heating is stronger, and repeated forging is conducive to eliminating casting defects and stresses, which is convenient for the mass production of existing large-scale forging equipment, and has incomparable superiority over other materials. As long as the range is stronger than the enemy's, the explosives are more powerful and safe to use, and everything else that can be saved is saved.

Third, Bailiyan does not expect that the conscience cannon can replace the current main artillery, this is unrealistic, no matter how good the performance is, it is limited, there is no need to waste a lot of industrial capacity to produce this kind of thing, as long as it is safe and usable, the performance is up to standard, and the rougher will be rougher.

In the end, the conscienceless artillery is an emergency product, and it is not the right way after all, and sooner or later it will be replaced by large-caliber mortars and howitzers, and at that time, regardless of range or power, the conscienceless artillery will be obsolete in the later stage of technological development.

Of course, for the time being, this thing is already a great killer in the past.

The next day, Bai Liyan accompanied Su Fangyi and Wei Chiguang to the shooting range of the armed camp outside Yongxing City to watch the artillery training.

Wei Chiguang immediately placed an order to purchase twenty thirty-six-pound cannons and 5,000 rounds of grenade shotguns, Bai Liyan did not refuse, but he did not immediately agree to give the goods, or a production capacity problem.

The smelting of platinum-based copper-nickel-iron-based alloys is very difficult, and the required stoker technology is extremely high, and the expansion of production capacity requires the training of a large number of special furnace workers, which requires a process. At present, the orders are given priority to the use of the navy and army of the Xianguo country, and the production capacity has reached the limit, and it is necessary to move the share to allocate the excess orders.

In view of the imminent situation, considering that this year's production plan has been full, Bailiyan decided to vacate personnel and equipment next year and officially finalize the production of Yongxing rifles, in view of the urgency of time, Bailiyan decided to design two or three firearms that are easy to produce at the same time, so as to facilitate the production of a large number of equipment, shotguns and revolvers were first included in the plan.

Whether it's a shotgun or a revolver, ammunition supply is a problem, and continuing to use breech guns is obviously a bit outdated. If the breech is used to load the cartridge, the metal cartridge is bound to be used, the paper cartridge case is not only difficult to meet the use environment, the air leakage problem that the revolver gun and shotgun cannot overcome, is more serious after the use of paper cartridge case, and the metal cartridge case is conducive to air tightness.

Of course, the revolver can also use bare ammunition, and the revolver uses blind holes. Modern revolvers use five-hole or six-hole through-hole nests to load ammunition, while early revolvers use blind holes to manually fill six slots, use interference lead bullets, use cartridges to press into the rotor holes, and then load the nest into the revolver gun to achieve continuous revolver shooting.

The advantage is that it enables continuous shooting, but the disadvantage is also obvious, it is necessary to replace the preloaded nest in its entirety, and the shooting efficiency of the revolver depends on the number of nests. Due to the cumbersome nature of bare ammunition, it is far less convenient than metal cartridge guns, and air leakage and moisture cannot be solved.

On the issue of metal cartridges, Bailiyan set up a project three years ago when he was setting up a paper shell to order a rifle.

The structure of a small metal cartridge case is very simple, and it needs to be started from scratch, and its processing difficulty is far higher than that of an early rifle, and it has not been able to completely overcome the problems of tensile extension and penetration of metal cartridges and the unity of cartridge strength and outer diameter tolerance.

In addition, there is a tricky problem with metal cartridges, due to the constraints of tools and processing capabilities, the inner diameter of the barrel of the rifle is large, which directly leads to the general large diameter of the projectile, and the Yongxing rifle projectile is 14.5 millimeters (about 13 mm), which means that the metal shell cartridge of the bullet will be thicker than the warhead.

The use of rifle cartridge design cartridge, the amount of charge in the cartridge will rise sharply, the cartridge case needs to withstand the force will be greater, even if the bolt is not used to draw the shell and return the shell, only use the positioning lock loading, after the gun will face two problems, one is that the cartridge case can only be used to withdraw the cartridge shell by hand, and at the same time, the cartridge shell is supported in the chamber because of the pressure and expansion of the shell, and the worst result is that the cartridge shell explodes and blooms, and it is stuck in the chamber and cannot be pulled out.

Of course, it is possible to make a small outer diameter of the cartridge shell appropriately, but in fact, the proper tolerance between the bullet and the chamber is conducive to the sealing of gunpowder, and the strong crossing of the cartridge case itself is improved.

If you thicken the shell, whether it is copper or brass, the thermal expansion is very high, and it is still easy to swell the chamber due to heat. The excessively thick ammunition not only increases the weight and reduces the carrying of the ammunition, but also brings difficulty to the stamping and stretching and riveting sealing, and also reduces the kinetic energy of the projectile, which is not conducive to the pouring and killing of the projectile.

Therefore, in the case that the barrel cannot be made smaller, the cartridge cannot be made smaller, and at present, only the metal cartridge case with a relatively small length and diameter can basically meet the technical requirements, that is, the pistol bullet.

Finally, the use of metal cartridge shells for firearms needs to increase a series of structures such as casing, planing shells, magazines, ammunition supply, lubrication, and rotating locking bolts, which are all complex engineering technologies for the current design capabilities, and automatic firearms also need to increase the re-entry and retraction mechanism, and high-strength springs are also critical.

It's very simple to think about, starting from scratch has no physical and technical foundation, and it is impossible to come up with a set of mature design and feasible production process in a short time.

At the beginning of the design of the paper shell fixed rifle, the technical ability was very limited, and the accumulation of experience and practicality was the mainstay, so it did not intend to solve the problem of loading and drawing metal cartridges in the short term.

For now, the only choice is to settle for the next best thing, putting the long-barreled rifle cartridge on hold for the time being, seeking pistol cartridges and shotguns with fewer charges and lower strength.

On April 17, five days later than the imperial guest, the news of the defeat of the eldest grandson was delivered to the tomb from the front, causing an uproar for a while.

In February, there was a battle, the eldest grandson lost half of the county, the defense of the country took advantage of the victory to pursue, in March, the eldest grandson has lost two counties, it can be described as a rout, the original calm and calm is gone, the arrogance of the envoy of the defense is even more arrogant, threatening to take the three counties of the eldest grandson within half a year.

This county ranges from 10,000 square kilometers to 100,200,000 square kilometers, and the defense of the country has fought three battles in succession since last year, and it will continue to fight again without repairs, and it is said that it is not so exaggerated to say that it will take three more counties in half a year.

Thinking that the Jin army raided Jiangdong East County of Xianguo that year, it only pushed two counties in the past year, and Zhao Xun attacked Pengyuan, and it took several months to take it, which shows how difficult the war was.

The reason why Wei Guo pushed so fast was that the eldest grandson Guo Taishui wanted to count on one or two "magic weapons", but he didn't know that the essence of war was people.

In the prince's mansion, Xihuan was in a big rage, because Ji Feng turned a deaf ear to her request.

After Xihuan learned of Ji Feng's mysterious transaction with Bailiyan, he "interviewed" Ji Feng three times to inquire about the inside story and asked for the purchase of equipment.

If you want to say that this is no wonder Ji Feng, Xihuan didn't know what he bought, and when he heard that Ji Feng opened his mouth to open his mouth, he was trembling with anger. This time Liang and Xian reached a final agreement, how could Xihuan be happy.

This is not the most fire-repellent thing, I just got the news recently, the marriage between the Marquis of Lu and the Marquis of Yongxing wants to marry, which is tantamount to a thunderbolt on a sunny day and falls firmly on Xihuan's head.

"Even the Marquis of Lu is also a hundred miles of Yan, it is unreasonable, General Ji."

"My subordinates are here, what does Her Royal Highness the princess command?"

"Immediately send someone to take the post of the palace to Bailiyan and invite him to come to the palace tomorrow."

Ji Jinsheng didn't know why, and hurriedly asked:

"Your Highness, what is this?"

"Lu Hou can be a matchmaker for his nephew, can't this palace be a matchmaker for the future prince."

"Shhhh This ......" Ji Jinsheng was taken aback when he heard this, and hurriedly said: "Your Highness, I'm afraid Bailiyan won't agree." ”

"Hmph, Bengong gave him face, do he dare to do it."

"With Baili Yan's temperament, I will definitely refuse His Highness's request."

"If he dares to refuse the request of this palace, he will regret it in the future and do so."

"Subordinates obey!"

Ji Jinsheng stubbornly responded to this matter, and at this time, Gu Chen outside the house hurriedly came in to report:

"Your Royal Highness Princess, Lord Chai just asked to see him, and was sent away by his subordinates."

"It's really fast, what did Chai Xiangke say?"

"Back to Your Highness, Lord Chai only said that he would come back another day."

As soon as the news of the defeat of the eldest grandson spread, Xihuan expected that Chai Xiang would definitely come to the door to test the tone, so he informed the people in the house in advance that she was sick and recuperating and was not suitable to see guests, and sent Chai Xiang away.

"General Ji, Xianguo has not moved for a long time, could it be that Xianguo and Weiguo have made peace in private?"

Xihuan asked, Ji Jinsheng twisted his white beard and said cautiously:

"The subordinates don't look like it. Although the Xianguo is strong, if the country is swept to the north, there will be no worries, and the eastward entry into the Xianguo will bear the brunt, Bailiyan will not be ignorant of the truth of the cold lips and teeth, but there has been no sign of troop transfer so far, which is indeed strange. The subordinates thought that Bailiyan might be paralyzing the defense of the country and ordering it to continue to fight on the northern front, and at the same time, it would only send troops when it was difficult for the country to defend the country after our country sent troops. ”

"Hmph, treacherous, you must find a way to get him to send troops."

"Your Highness, do you still remember what your subordinates and Your Highness mentioned last month that they would ask him to send troops with the country as bait?"

"I remember that the palace said at that time that there must be a trick, and General Ji wanted to ask him to send troops in the name of recovering the lost territory for the country. Tomorrow then, ask him to come and find out his mouth. ”