Zhang Dezhi said: "This small gun is a tiger squatting gun.
It was invented by General Qi Jiguang when he fought against Japanese invaders.
The whole gun is 75 cm long and weighs 36 kg.
Two soldiers can easily lift it, mainly firing shot, and can fire hundreds of shot at a time.
This kind of gun is very useful against dense enemies. It can effectively break through the heavily armored enemies and is more effective against the unarmed enemies. "
Su He looks at the tiger squatting gun, which is an ancient mortar that can be used for company and platoon level support firepower.
Zhang Dezhi patted the medium-sized gun and said, "This gun is bigger than the one I cast for the Wei Institute.
It is more powerful and very suitable for following the army.
It has a diameter of 75mm and a total length of 1.2 meters.
The weight is only 800 jin, and it can be pulled away with a horse when the wheels are mounted. "
Zhang Dezhi pointed to the heavy artillery and said, "This artillery is the mainstream Hongyi artillery, which is specially used to defend cities and attack fortified areas.
It has a diameter of 110 mm and a total length of 2.5 meters.
This gun weighs two thousand jin. "
Su He looked at the three kinds of cannons in front of him. The bronze luster was so dazzling.
As long as the firearms factory can produce cannons in batches, let alone the Ming army, Jiannu is coming. He dares to fight with Jiannu cavalry.
"Let's go to the artillery training ground to test the power of the artillery."
Su He asked that when the cannons were cast, they should always try their power.
Don't produce a batch of model goods. They are very powerful. They will burst the bore after a few shots.
Zhang Dezhi has cast five cannons of each kind, and these fifteen cannons use nearly 20000 jin of copper.
The bronze cannon is too expensive. It's just burning money. It must be worth the price.
Su He asked the messenger to tell Zhang Yuliang to test the cannon.
Zhang Yuliang's artillery battalion did not go to the front, and is now working hard to train artillery.
Artillery is not a big weapon for attacking ordinary villages.
Only when soldiers surround Yimen Castle will they use artillery.
Zhang Yuliang came over with a surprised look on his face. He looked at so many cannons in front of him and said with surprise, "Dad, you are so powerful to forge so many cannons."
With these guns, his artillery camp is not empty and can go to the battlefield.
Zhang Yuliang immediately commanded his soldiers to carefully carry the bronze cannons for fear of bumping them.
The tiger squatting gun can be carried by two soldiers, and the medium-sized gun can be easily pulled away by one horse.
Heavy artillery requires four horses to pull the cart, and the ruts are pressed on the loess ground, all of which sink 10 cm deep.
Seeing this situation, Su He was worried about heavy artillery transportation.
Besides water transportation, it is convenient to transport heavy artillery.
All roads are dirt roads, and heavy artillery is transported by carriages. The next light rain will make it impossible to transport heavy artillery.
The research and development of cement is imminent, but there is no limestone near here, so we can only try to manufacture after finding the mineral.
Limestone was of limited use in the late Ming Dynasty, and had no great mining value at all.
The gentry who were able to mine went to mine gold and silver, iron ore, copper and other high-value minerals.
The carriage pulled the cannon to the artillery training ground.
The artillery training ground is next to the military camp, which is a very wide loess land.
There are many wooden targets in the artillery training ground, which are placed regularly, one target every ten meters.
The artillery unloaded the artillery and placed it as required.
"Start testing."
At Su He's command, the artillery began to load the cannon with ammunition and attach a long firerope.
The artillery hid in a far ditch and lit the cannon's line of fire.
After a few shots, all three cannons can work normally.
Zhang Dezhi and the craftsmen rushed there, but the bronze gun was still hot.
He took out a small hammer and knocked left and right, listening to the echo from the metal.
Zhang Dezhi made a careful inspection. He walked to Su He and said excitedly, "Commander Su, after my inspection, there is no crack in the cannon.
They are all qualified cannons and can be used normally. "
Su He laughed happily when he heard that the cannons were successfully cast and that the firearms factory could produce cannons in batches.
Su He thought about the configuration of the cannon, and the tiger squatting cannon was configured to the first level of the platoon.
Medium artillery is mainly equipped with artillery battalions for battlefield support.
Heavy artillery is mainly used to defend cities and attack fortified cities. It is not available now, but it should also be forged in advance to train soldiers.
"Mr. Zhang, you should produce as soon as possible 90 tiger crouching cannons, 30 medium cannons and 10 heavy cannons."
Zhang Dezhi was ordered to take people from the firearms factory back to forge cannons happily.
Su He and Zhang Yuliang remained at the artillery training ground.
Su He looked at the cannons and said, "Take out two of these three cannons for a violent test.
Gradually increase their charge to see how much will burst the chamber.
Select the appropriate charge according to the maximum charge.
Try not to let the cannon burst, give full play to deterrence, and try to use predestination as long as possible. "
When Zhang Yuliang heard Su He's order, he commanded the artillery to gradually increase the charge of the cannon.
After several rounds of experiments, they found the maximum charge of the cannon.
The test cannon also exploded directly from behind, and the fragments collapsed around.
After careful calculation, Zhang Yuliang also found the best charge of the three cannons.
Su He looked at the power of the cannon, which was more powerful than the hand grenade.
On the battlefield, the nearby artillery will be injured and killed.
If the quality of the artillery is poor, no artillery will be willing to use it.
In the late Ming Dynasty, the quality of artillery was inferior to Jiannu.
The appropriation of the imperial court for a cannon was not even used for casting cannon.
Su He watched the artillery loading process and put forward his own suggestions to Zhang Yuliang.
"I have a suggestion that we should calculate the amount of grain gunpowder required for each kind of cannon and wrap it with silk.
The material of silk has been burned, and there is almost no residue.
When using, first pack the silk, then cut it with tools from the fire door, and put the fire rope into it.
The artillery with a little training is just like the elite artillery.
Each artillery does not have to rely on his own experience to calculate the amount of charge. "
Zhang Yuliang thought carefully about Su He's suggestion.
"Commander Su, we can specially produce a thin silk for wrapping gunpowder.
This gunpowder package is usually wrapped with oil paper, and the oil paper can be opened directly when used.
The gunpowder bag is stuffed into the gun, and the soldiers carry some bulk gunpowder with them. They pour a small amount of gunpowder into the gun door, and finally load it into the gunrope.
The thin silk cannot stop the burning of gunpowder. The gunpowder outside can easily ignite the gunpowder inside the silk bag.
In this way, the charge is more accurate, and the artillery will not misfire because of the soldiers' tense operation errors. "
Zhang Yuliang proposes better improvement plans based on his own experience.
"Let's go to the warehouse and look for this kind of silk."
Su He and Zhang Yuliang immediately went to the warehouse to search for silk.
Silk seized in the warehouse. Only two silks, which are as thin as cicada wings and very transparent, have passed the test and met the requirements.
Su He asked the guards to take the two silks away.
He guessed: "This should be a mosquito net."
I didn't pay attention to the slip of silk, on which was written "Special Shu Brocade - Special Offer of Jiaofang Department".
The quantitative gunpowder package was solved, and the artillery continued to test the range of the artillery.
After several rounds of tests, they got detailed data of these three kinds of cannons.
The tiger squatting gun has an effective range of 430 meters.
The effective range of medium artillery solid projectile is 1200 meters, and the maximum range is 1800 meters.
The effective range of shotgun is 980 meters.
The effective range of heavy artillery solid projectile is 2000 meters, and the maximum range is 2800 meters.
The effective range of shotgun refers to the distance to penetrate the heavily armored enemy.
The effective range of a solid projectile is the distance from which its maximum power is exerted.