Although Zhao Shizhen, who was surprised by the "100 steps through Yang" of the "stun gun", couldn't close his mouth, but for this result, Shi Yiwen just pursed his lips disapprerovingly, and then said to himself.

"The accuracy is almost there."

Indeed, for Shi Yiwen, who is accustomed to the kind of "long-distance sniping at a distance" in later generations, the accuracy of the "stun gun" does not arouse his interest too much at all.

Although he is a layman for school guns, Shi Yiwen still spent a day adjusting the "electric gun", starting from a distance of 100 meters, then a distance of 200 meters and 300 meters, and a distance of more than 400 meters...... He didn't think about it at all, and with this rifled gun, hitting a target 300 meters away often depends on luck, so after the adjustment is completed, its ruler only has three scales: 1, 2, and 3.

However, in general, from the perspective of the times, the "stun gun" is not only quite accurate, but also extremely fast, with the pre-installed sub-gun, the rate of fire exceeds six rounds, according to the standards of the times, it can be called perfect. Although it does not meet the standards of later sniper rifles, the accuracy of accurately hitting a 6-foot-high and 2-foot-wide wooden target at 200 meters is enough.

"Shizhen, well, its caliber is too big, rifled guns and smoothbore guns are different, smoothbore guns rely on increasing the weight of bullets and charges to increase their power, while rifled guns can appropriately reduce the caliber, by increasing the muzzle velocity to increase the power, moreover, it is for the family, anti-bandit and anti-theft guys, the caliber does not need to be so big, I think the caliber of 12 mm is almost enough."

Because the measuring tools in the factory were taken by Shi Yiwen from the space, he is no stranger to the metric unit Zhao Shizhen.

Will 12mm be a little smaller? Of course not, reducing the caliber and increasing the muzzle velocity can not only further increase the power, but also improve the accuracy. In the end, Shi Yiwen told Zhao Shizhen to remind him to use conical bullets for "stun guns".

"In addition to using a conical bullet, this caliber is smaller, and the penetration rate may also decrease, you see, can we design an iron core bullet......"

Thinking of the steel core bullets that were more common in later generations, Shi Yiwen casually drew a drawing.

"It's such an iron core, well, it's also cast, about 5 millimeters in diameter, and then it's covered with a lead sleeve. The tip of the steel core is exposed, and the lead sleeve wraps the ...... from behind"

When explaining this "iron core bullet", the bullet that Shi Yiwen thought of was the warhead with an exposed steel core like the Russian 7N21 pistol bullet, but the copper armor was canceled here.

"This, this ......"

Looking at the drawings drawn by Shi Yiwen in surprise, Zhao Shizhen was surprised.

"What kind of bullet is this?"

"Armor-piercing bullets!"

Smiling at Zhao Shizhen, Shi Yiwen said with a smile.

"If my estimate is correct, it should be able to penetrate thick armor from a hundred meters away."

As soon as Shi Yiwen's words fell, Zhao Shizhen hurriedly lowered his voice and said.

"Zhiyuan, in my opinion, this armor-piercing bullet does not need to be manufactured, after all, this "electric gun" is made to give you self-defense, this bandit, and a few will wear armor, such a "armor-piercing bullet" can be called a militaristic weapon, in case it spreads, I am afraid that it will be unfavorable to my Ming, after all, my Ming to the Tartars, has always been based on the thick armor of the gods, this armor-piercing bullet, it is better not to show people easily. ”

Hearing him remind him like this, Shi Yiwen was surprised for a moment, and then said.

"Oh, this is my miscalculation, but it's actually not a big deal, Shiji, do you think it will take the "Thunderbolt Gun" as an example, how long will it take to make the surrounding Tartar? ”

Shi Yiwen's rhetorical question made Zhao Shizhen ponder for a moment,

"The manufacture of the "Thunderbolt Gun" is not difficult, but the manufacture of the barrel is time-consuming and labor-intensive, and the iron material of the Tartar is limited, so naturally it will not be easy to make flintlock guns, and the nitrate and sulfur are not what the Tartars are good at collecting, and even the things that are not available on the grassland, so I think they will never easily switch to the "Thunderbolt Gun". ”

Then he shook his head and said.

"It's not about how long, but about some magic soldiers, which can't be easily shown, this armor-piercing bullet, in my opinion, it's better to be cautious, after all, our Ming army's thick armor."

In the face of Zhao Shizhen's caution, Shi Yiwen just smiled slightly, looking at the "armor-piercing bullet" he designed and smiled.

"Well, since Shiji insists, then it's up to you, but you can make some first, just in case."

In fact, Shi Yiwen doesn't have a special need for weapons, at least not now, at most, he just needs a few weapons to guard the house. Just like the "electric gun", a flintlock rear-loading rifled gun similar to the Franc machine, although it can be called perfect from the perspective of the times, it can only be used as a "caretaker" because of the cost.

In the following days, the iron factory has produced fifty "electric guns", including ten short guns, this batch of "epoch-making weapons" naturally became the weapons of Shitaizhuang Zhuangding, almost overnight, Shitaizhuang Zhuangding, jumped from the era of cold weapons to hot weapons, and it is also an epoch-making "rear loading gun", of course, from cold weapons to hot weapons, always need a process of adaptation, fortunately, the rear loading gun is not as cumbersome as the front gun, and it is relatively easy, so, Zhuang Ding is also very fast.

Shi Yiwen didn't pay special attention to the training of Zhuang Ding, after all, compared to him, Zhao Shizhen knew how to operate the flintlock pistol, and he had also spent some time in Qi Jiguang's army, so he certainly knew more about how to train soldiers than he was a layman. After all, he had only received a few days of military training in high school and college, that is, standing in a military posture, and he was a complete layman for the training and use of the "stun gun". Naturally, it is inconvenient to meddle.

However, when Zhao Shizhen was busy training the Zhuang Ding in the Zhuang, Shi Yiwen was not idle, but checked the growth of cotton in the fields in the Zhuangzi, thanks to the fertilizer bought from the "dung fields" around the capital, the cotton brought out of the space grew quite well.

"One acre of land can produce more than 100 catties of seeds, and if you breed these thousands of acres...... By next year, cotton seeds will be almost enough. ”

In addition to talking to himself, Shi Yiwen naturally thought of other seeds in the space, such as the seeds in the specimen container in the Agricultural and Animal Husbandry Research Institute, including wheat, rice, corn, sorghum, millet, soybeans, and various varieties. It's just that the number is limited, but if it is used for breeding, it may only take a few years to solve the problem of quantity.

"Perhaps, we can consider turning Zhuangzi into a breeding base for improved varieties......"

Turn Zhuangzi into a breeding base for improved seeds!

The sudden thought made Shi Yiwen's eyes suddenly light up, and he seemed to have found the future of Zhuangzi, not only the improved varieties of crops, but also the breeding of some good breeds of horses, cattle and sheep, after all, these will be useful to the common people in the future.

At this moment, a shout from behind him interrupted his thoughts.

"Brother Zhiyuan......"