Xuan Yi looked at the targets, there were some gravel embedded in them, but they were not deeply embedded, at most only half an inch deep. Such a power is indeed far inferior to the Tiger Squat Cannon, even if the opponent has no armor at all, such a blow can only cause injuries, or even minor injuries, but not fatal. Such a blow is not even as powerful as a bow and arrow, but in the concept of the Mandarin Duck Formation, the most important task of a light artillery such as the Tiger Squat Cannon is to suppress the opponent's archers. Judging from the performance of the elm cannon now, it is obvious that such a tactical task cannot be completed, no wonder Liu Jiexuan feels very disappointed.

But that's to be expected. The first test firing, the charge was relatively conservative, and the fire was loaded. Although the barrel of the elm cannon is obviously longer than that of the tiger squat cannon, the inner wall of the wooden barrel is also rougher and the friction is greater, so Xuan Yi estimates that even if the charge is comparable, the speed of the gravel it shoots out is lower than that of the tiger squat cannon.

"Not bad, at least not in the chamber." Huang Zide was not depressed, "Let's add more fire. Try the medicine, maybe it can be stronger. Well, by the way, will that cannon still work? ”

When Xuan Yi talked about the elm cannon with Huang Zide, he once mentioned that the elm cannon is a kind of artillery that can only be used once or twice at most, so he has such a question.

"Owner of the village, there are not many charges this time, and it should be used again." Xuan Yi said, "But this cannon will cool down, and it will take a while." But we have a few other guns, this one we'll add more gunpowder and see how it goes. ”

"It's fine." Huang Zide nodded, and then shouted to Liu Jiexuan, who was still looking at the target over there: "Old Liu, don't look at it, there is a test soon." ”

Liu Jiexuan kicked on the target, and then walked over and said, "This time the gunpowder is a little more." ”

A few men retreated into the trench, and by this time the second elm cannon had been placed on the gun position.

"This cannon is relatively large, weighing three hundred pounds." Xuan Yi introduced to Huang Zide, "It is very heavy than the Tiger Squat Cannon, so there are more charges." This time we filled it with twice as much gunpowder as the Tiger Squat Cannon, and we don't know how effective it was. ”

"It looks so big, it should be more powerful." Liu Jiexuan said.

If it's a 300-pound copper cannon or an iron cannon, it may not look a little big. But a three-hundred-pound wooden cannon looks like a lot of money. It seems that the block is comparable to the thousands of pounds of general cannons.

"It's a pity that there are no wheels, and it still doesn't look like a general's gun." Liu Jiexuan said again.

"This cannon can always be compared to the tiger squat cannon, right?" Huang Zide also said.

At this time, those soldiers had also completed the loading of the elm cannon and were ready to open fire. Except for the gunners who lit the fire, everyone else retreated. The gunner first shook his torch to this side, signaling that he was ready. This side was quick to respond.

So the gunners lit a long arque, and then retreated safely into the pit. After a long while, a puff of smoke suddenly erupted from the muzzle of the elm cannon, and almost at the same time, the muffled sound of the cannon reached everyone's ears.

"Yes, there are no explosions!" Huang Zide nodded and said, compared to Liu Jiexuan, his requirements for the elm cannon seemed to be much lower.

"Let's go and see the target." Liu Jiexuan said.

But this time, you don't have to go all the way to the target to see the power of the cannon. Because this time, the gravel shot by this cannon did not hit the target at all, but hit a tree more than ten steps to the left of the target.

"What the hell is this! Why did you miss so much? Liu Jiexuan muttered.

"Lao Liu, to be honest, even if it is a tiger squatting cannon, it can't be accurate. If you want to hit someone, you have to wait in at least one line. Huang Zide said.

Liu Jiexuan also knew that Huang Zide was reasonable. In fact, the accuracy of the cannons of this era, even when firing shotguns, has always been very poor. So he said, "Anyway, we hit that tree, let's go see that tree." ”

A few people walked towards the tree, and when they walked more than ten steps away, they saw from a distance that the trunk of the tree was full of holes, like a pockmarked face.

"Lao Liu, look at this cannon, it has caused a smallpox on this tree." Huang Zide suddenly pointed to the tree and laughed.

A few people laughed together. Liu Jiexuan walked to the side of the big tree in two steps, and once he saw that the gravel had been deeply embedded in the trunk, he probed it with his fingers again, almost half an index finger deep.

"Not bad, not bad. This power is unbearable with ordinary armor. If this is an archer of the official army, he will have to shed his skin if he doesn't die. Liu Jiexuan praised with satisfaction.

At this time, Huang Zide also came over, and like Liu Jiexuan, he also put his fingers into the hole made by the gravel and probed, and then Liu Jiexuan's words: "What kind of peeling skin, this thing hits the body, even a body of iron armor can't withstand it, right?" What kind of skin is he still shedding, if he doesn't die, hehe, then he must be a monster, right? Well, Dao Chief, you said that we should equip this thing with a sturdy iron shelf, which can be dragged and run, and then every time you finish fighting, you can change it, okay? ”

"Owner, now we are only thinking about whether this thing will hit or not, whether it will kill people, and whether it will explode. I haven't had time to pay attention to how to carry this or something. In addition, we are still trying a new gunpowder, and if it does, it will be even more powerful. "Xuanyi hugged his fists.

Huang Zide listened, laughed and said, "This matter, I am indeed too anxious." Well, Dao Chief, Lao Liu, there should be a lot of elm cannons to try, right? ”

"Owner, these two times, the first time I tried the smallest, the second time was the largest, and then there are a few weights in the middle, try them one by one, to see if you can find a weight, size and power are suitable. In addition, after this round of tries, try the selected cannon for a few more rounds until it explodes, and see how many times the cannon can be used. Xuan Yi replied.

Huang Zide listened, nodded and said, "It's still the Taoist to do things in an orderly manner." Then he turned his head to Liu Jiexuan and said, "Old Liu, when we used to do things, we always thought of a play, and it was a play." Now that the Taoist chief is here, this is much more organized. It's just that now we have fewer people and fewer things, and the Taoist chief is still busy alone. In the future, our situation will be big, and then the matter will go to the sea, and if we want to let the Taoist chief work alone, the Taoist will be beaten with iron, and he will not be able to hold on. You guys, when you have time, you have to learn more from the Taoist. In the past, we listened to "Three Kingdoms" and said, "Liu Adou who can't be helped", but I only felt that the most useless thing about this Liu Adou was cowardice, and Deng Ai was scared to surrender by only a few people. Now that I think about it, the most unsupportable thing about Liu Adou is not this, but that he can't help Prime Minister Zhuge to bear even a little thing, and he is alive, which exhausts Prime Minister Zhuge to death. Finally, God sent us the Xuanyi Dao Chief, we can't exhaust the Dao Chief. ”

"Big brother has a point." Liu Jiexuan replied, "These days, as long as I have time, I will go to learn things from the Taoist, and then my sister-in-law will scold me, saying that I disturb the Taoist's rest......"

……

The test gun in the back went well, and the final selection was an elm cannon weighing about 150 catties. This thing is still a lot heavier than the authentic Tiger Squat Cannon. However, it is already very easy for four people to carry it with two flat poles, and as for the power, it is not much different from the regular tiger squat cannon. According to Xuan Yi, once he finishes the new fire. medicine, the power of this cannon can even slightly exceed the tiger squat cannon of the imperial court. Of course, it can't be compared with those general cannons of the imperial court, as well as the general cannons.

The so-called new fire. Medicine, in fact, refers to maroon fire. Medicine. This is also the knowledge from "Wang Mang". However, "Wang Mang" only knows a rough idea, and Huang Tian's knowledge is naturally even more limited. He only knew that if the normal charcoal was replaced with charcoal that was not sufficiently carbonized, the fire would be made. The medicine will turn maroon. And this fire. The medicine burns more slowly and is more suitable as a gun launcher. Medicine.

A lot of times people are interested in fire. There is an opinion about the power of gunpowder, that is, the faster the gunpowder burns, the more powerful it becomes. This is not entirely true. If this fire. The medicine is used to create an explosion, so it is true that the faster the burning, the greater the power of the explosion. Bombing of the Hereafter. Under the right detonation conditions, the combustion can even be carried out in the form of supersonic detonation, and the explosion power it produces is far beyond that of black fire. Medicine.

But if it is used as a hair. Shoot. Medicine, burning too fast is not a good thing. This is because of the launch in the field. When the medicine is used, if it is fire. If the combustion rate of the gun is too fast, and too much gas is produced in a short time, the pressure in the chamber or chamber will increase rapidly, which can easily lead to explosion; On the other hand, if the charge is reduced to avoid exploding, there will be a situation where the gunpowder that burns too fast will burn out before the projectile has time to fly out of the barrel or barrel, so that the pressure in the barrel has begun to drop rapidly before the projectile has time to fly out of the barrel. In this way, the acceleration of the projectile will also drop sharply, resulting in the length of the body tube is not effectively used, and the muzzle velocity of the projectile is not high enough.

On the contrary, if a slower burning gunpowder is used, when the charge is the same, when it is ignited, because the combustion is slow, the gunpowder gas is produced more slowly, and the extreme value of the chamber pressure caused by it is naturally much lower. In other words, the use of granular gunpowder can increase the amount of charge on the premise of ensuring that the chamber is not exploded. More charge, longer burning time, and ensure that when the projectile flies in the barrel or barrel, it can get a more uniform pressure that is closer to the bearing capacity of the barrel or barrel, so that the length of the barrel or barrel can be used more effectively, so that the projectile can obtain higher speed, which also makes it more powerful. Therefore, most of the time, the longer the body tube, the more hair is needed. Shoot. The slower the rate of ignition of the medicine, the slower. Chestnut gunpowder is used instead of normal gunpowder in order to reduce the rate of ignition.