PS: Thank you for the monthly ticket voted by the book friend "Don't Ask the Seven Swords" and "Yuan Awakening".

About three seconds later, there was a "boom", and the smoke and the loud noise occurred almost simultaneously.

Then there was the shaking of the ground.

Wu Zheng's first reaction was, this is too powerful, right?

When a stone the size of an egg "snapped" and landed about a meter in front of Wu Zheng, Fang Guoan, who came with Wu Zheng, quickly blocked Wu Zheng in front of him with his body.

Wu Zheng was a little moved, and gently patted Fang Guoan and said, "I'm tired." General Fang doesn't have to worry, there should be no danger outside ten zhang. ”

Fang Guoan saw that Wu Zheng was fine, so he retreated.

Chen Shoujie and Qi Daokun hurriedly pleaded guilty.

Wu Zheng smiled and waved his hand, "It's okay." In the future, be careful to set up a shield around you to ensure safety during the test. ”

At this time, the smoke gradually cleared.

Wu Zheng took people closer to check, and saw that wisps of smoke were still rising in the bowl-shaped pit on the ground, which was about one meter square and two fingers deep.

The armor and livestock remnants that were originally arranged have been blown apart by about two or three meters.

The armor had obvious holes and signs of being pierced by cast iron, and there were even two clearly visible fragments embedded in the armor.

There was a sheep that had been blown to pieces.

Wu Zheng was a little shocked, this power was far greater than he imagined.

But think about it, a pound of six taels of black powder, no wonder the blown up stone can fall ten zhang away, almost hitting himself.

No, it's too powerful.

Let's not talk about how far it can be thrown, if the soldier accidentally blew it up in his own hands, the squad would be gone.

Wu Zheng said to Qi Daokun: "The structure of the grenade, this king has no objection, and the power of the explosion is also very satisfied. However, it is necessary to reduce the weight, reduce the overall length, and appropriately reduce the amount of gunpowder. ”

Qi Daokun responded: "Obey the order, but if the charge is reduced, the power of the explosion may be much smaller." ”

Wu Zheng picked up a piece of cast iron and said: "This cast iron shell is too thick, try to make some more iron shells with a thickness of two or three millimeters, see which one is more suitable, and at the same time reduce the amount of gunpowder by half...... The total weight is controlled to one and a half pounds, and the total length is controlled within twenty centimeters, so that it is easier for soldiers to throw. Otherwise, like the current weight, I'm afraid I can throw it more than ten meters away, right? If this is the case, the grenade will not be of much use, and according to this power, it is estimated that it will affect the thrower, and the king does not want the soldier to be killed by his own grenade. ”

Wu Zheng remembered that in the later generations of grenade training, about 30 meters passed, 40 meters excellent, and there were many strong people who could throw about 50 meters, this distance is what Wu Zheng wants.

Qi Daokun responded: "Obey orders." ”

Wu Zheng threw down the broken iron piece and said: "For a two-millimeter shell, the outer engraving line should be one millimeter deep, so that when it is detonated, the iron shell will be broken more thoroughly, and the natural lethality will be greater." ”

"The lowly duty is written."

Patting the soil in his hand, Wu Zheng said: "How is the trial production of the mine?" ”

Chen Shoujie replied: "It is being trial-produced, and within half a month, it will definitely be completed, and it will not exceed the time limit of the prince." ”

Wu Zheng nodded and said, "Thank you for your hard work." The detonation of the grenade this time, the king is still satisfied, the weight and length, the blame for the king did not explain clearly, it is not your responsibility. ”

"Thank you, Lord Wang."

"After the improvement, prepare fifty training grenades for this king, and the warhead does not need to be filled with gunpowder, but can be filled with the same heavy sand."

"The lowly duty is written."

……。

On the way back, Wu Zheng was in a good mood.

Although this grenade did not meet Wu Zheng's expectations, being able to create such a grenade means that there is no technical bottleneck in shrinking.

And thinking that in the future, musketeers could carry grenades on their waists to fight the enemy, Wu Zheng couldn't help but show a smile on the corner of his mouth.

Fang Guo's peace of mind was indeed shocked.

He has been from Rong for 20 years, and has also seen and used throwing gunpowder jars, but the containers are clay pots and wine jars, many times, thrown out, after landing, they will be broken into a ground, and then ignited with a "boom", this power is to smoke the surrounding area black, and the fever is rolled, but there are few fatal ones, this is mainly after throwing, the time of the arquebus detonation is difficult to grasp, and everyone's throwing distance is different.

Of course, when you are lucky, for example, just when you are about to land, the crockpot detonates, which is indeed a lot of specific lethality.

But in this way, there will be one or two out of ten.

But today, Fang Guoan has gained a lot of knowledge, although he didn't see the throwing, but Fang Guoan saw the iron shell and the wooden handle, the iron shell can prevent chipping, and the wooden handle can make the soldiers throw farther.

And the power of the explosion made Fang Guoan wake up to the new tactics mentioned by Wu Zheng, and Fang Guoan understood that the tactics of such a firearm really needed to be changed.

Fang Guoan looked at Wu Zheng hesitantly, for a long time, and said in a muffled voice: "Lord Wang, you admit defeat in your humble position." ”

Wu Zheng smiled: "Oh, General Fang, why is this? ”

Fang Guoan said frustratedly: "Originally, my subordinates thought that according to the current loading speed of the musket, after three rounds of fire, the enemy had already entered a distance of twenty-five steps, so the soldiers had no time to reload again, so they could only fight the enemy with bayonets." But the appearance of this firearm today made his subordinates understand that when fifteen to twenty-five paces in front of the battle, soldiers can still rely on this firearm to block the enemy's advance...... Not only can it block the enemy's advance, but it also gives some soldiers time to continue reloading and shoot the next round. Therefore, the subordinates also felt that the original tactics really needed to be changed. At this time, if you think about it carefully, the prince should already have a good idea of this, and since this is the case, his subordinates are willing to bow down. ”

Listening to Fang Guoan's reluctant admission of defeat, Wu Zheng's smile became even stronger, Fang Guoan's ability to recognize the use of the grenade so quickly really surprised Wu Zheng.

According to Wu Zheng's idea, in a field battle, the greatest role of grenades is not to kill the enemy, but to block the enemy.

Only by delaying the enemy's advance momentum can this create more time and opportunities for soldiers to shoot.

Especially against cavalry, when a grenade explodes on the charging path of the enemy horseman, even if it misses, it will at least cause a temporary panic of people and horses, and once its momentum is disrupted, then not only will the pressure of the musketeers be reduced, but also give the musketeers an extra round of reloading time.

One more round of shooting, you can't underestimate it, this will be directly related to the victory or defeat of the battle.

This is like the speed of swinging a knife on the battlefield, if you can swing the knife once, the odds of winning will be one percent.

"General Fang was too worried. This king has long said that winning or losing in this competition is not the most important thing, but the important thing is to point out the direction for future military training. Therefore, it is better to compare, otherwise it will discourage those soldiers. As for winning or losing the competition, ....... ”

Wu Zhengwan smiled, "Since General Fang thinks that this competition is unfair, then the king will cancel the previous bet, so General Fang doesn't have to worry about this matter." ”