On the battlefield, the effective range of weapons is very critical and will affect the use of tactics. It can effectively shoot targets from a thousand meters away. Who will run to death within five hundred meters? Luo Zheng is very concerned about the effective range of this newly developed bullet. If you need to shoot at close range, it will not be of much significance. Dongfangli understands Luo Zheng's mood, think about it and said: "In theory, it is a thousand meters, try five hundred meters first."

"Okay, take your time." Luo Zheng agreed.

Dongfang Ling immediately asked everyone to carry the target out of the shooting range. Luo Zheng told Lan Xue to continue to give instructions and not to watch. The experimental content was banned. The bullet was top secret and could not be disclosed. Even if Luo Zheng believed that the brothers of the Gui Case Bureau were all loyal and would not leak the secret, he had to consider it.

Everyone came to the shooting range and placed the target wearing bulletproof armor five hundred meters away. Luo Zheng skillfully raised his gun and aimed at it. For Luo Zheng, there was no problem with the five hundred meters goal. He calmed his mind and stared at the target's heart, and his hands were as stable as a rock, and he remained motionless.

"Swish--" Luo Zheng fired, and the bullet whistled out of the bore with Luo Zheng's expectations. The sound was obviously sharper than that of ordinary sniper bullets. Luo Zheng felt that the bullets seemed to fly much faster. It was a very strange feeling. Before his thinking could react, he saw the standing target being knocked down to the ground.

Luo Zheng rushed up curiously with the gun, his eyes fixed on the target, and his heart was a little nervous. He hoped that he could succeed. Luo Zheng rushed up quickly with expectation, with complex nervous feelings, squatted down and looked, a bullet hole appeared in the heart of the bullet-avoiding armor, just like a drill bit drilled out, and the bullet disappeared.

The bullet hole was very deep. Luo Zheng touched it with his hand and could feel that the bullet-proof armor was penetrated. He was immediately overjoyed. He put the weapon down, quickly turned on the target, unbuttoned the button from behind. Lan Xue was also very fast. He rushed up the second time and helped remove the bullet-proof armor.

At this time, everyone rushed up and saw Luo Zheng holding his armor toward the sun. A bullet hole appeared on the hard armor. Dongfang Ling saw this bullet hole, and his worried expression suddenly relaxed and breathed a sigh of relief. This was the first weapon developed by Dongfang Ling since joining the Wei Case Bureau. If it fails, it will gain a foothold.

"Successful, hahaha--" Luo Zheng shouted excitedly: "It's great, it can be accepted by 500 meters. I will test the attack power of one thousand meters away immediately. Dongfang Ling, you have made great contributions. I will thank you for your combat troops fighting on the front line. I would like to ask for your merits."

"Boss, you're welcome, this is what I should do, and arrange it immediately." Dongfang Ling agreed in surprise.

Luo Zheng took everyone back to the shooting line. Someone put the bullet-proof armor back and sent the target to the kilometer line to settle down. Luo Zheng stood on the shooting line and took another test bullet from Dongfang Ling's hand and asked with a smile: "How many test bullets have you done in total?"

"Three shots, this is the second shot, and there is still one left, wait." Dongfang Ling quickly agreed, looking at his colleagues around him and asked: "Hurry, all the equipment is in place, shoot the whole process, hurry up."

"Yes." The staff around quickly agreed.

Luo Zheng looked at Dongfang Ling curiously, Dongfang Ling explained: "We need to collect data, from the bullet out of the borehole to the void flight, to hitting the target, initial speed, flight speed, whether it is dying, and more importantly, the rotational force after hitting the target and drilling in, etc. These data are very important for correction and improvement of the bullet."

"You are still professional, it's a pity. I wasted a bullet. I'm really sorry. I'll give you extra meals tonight, so I'll apologize." Luo Zheng was stunned and said apologetically.

"He was joking." Dongfang Ling smiled politely.

After waiting for a while, all the shooting equipment was in place. Luo Zheng couldn't understand what these equipment were. Unlike ordinary cameras, several were placed along the way, and two were placed near the target. Seeing that everyone was ready, Luo Zheng looked at Dongfang Ling. Dongfang Ling nodded. Luo Zheng immediately raised his gun, took a deep breath, and his face became solemn.

Qianmian is the key distance. If the bullet can attack the target within Qianmianmian, there will be much space and flexibility in tactical use. Luo Zheng is looking forward to it, looking forward to success, his eyes squinted into a slit, and his rock-steady arm raised his gun and aimed at the other side of the target's heart, a little nervous.

"Swish--" Luo Zheng still shot decisively. The sound of bullets roaring out of the bore is like an angry tiger roaring, shaking the mountains and forests. The bullets flying at high speed make sharp sounds, like dragon roars, stimulating people's eardrums, buzzing, and a disgusting feeling comes out.

The bullet drew a terrifying airflow in the void, and accurately penetrated into the target. The target was knocked out again and rolled to the ground. Luo Zheng rushed up with the gun, his eyes shining with a hint of desire and expectation. Soon, Luo Zheng rushed to the target a thousand meters away. Seeing the target lying on the ground, he quickly squatted down, put the sniper rifle aside, unbuttoned the armor, and took off the armor.

There was no bullet hole on the other side of the heart of the armor, but the bullet was stuck. Fortunately, most of it was buried in the armor. Although the bullets could not penetrate the armor, they also penetrated the armor. Luo Zheng secretly breathed a sigh of relief when he saw this scene. It was easy to break through. As long as the problem was found and the technical bullet avoidance should be solved.

At this time, the others rushed up and looked at the armor on Luo Zheng's hand with a nervous look on their faces. When they found that most of the bullets were stuck in the armor, everyone breathed a sigh of relief and was not discouraged. As long as they could shoot through it, it means that the idea was right. Dongfang Ling squatted down and checked carefully.

Luo Zheng waited for a while, looked at Dongfang Ling and asked, "It should be possible to improve it, right?"

"Only, from the sound, the flow line of the bullet's edge needs to be improved. The blunt angle is a little larger, and friction with the air produces greater resistance, which affects the speed to a certain extent. If the speed is insufficient and the kinetic energy is insufficient, it will not be able to penetrate the armor. It is the spiral angle of these blades." Dongfang Ling pointed to the blade at the front of another bullet and explained.

The blade is like the cutting part in front of the drill bit. The spiral groove is not deep, but just a little guiding groove, which is conducive to the metal drilled out of the groove. Luo Zheng looked at the groove and pondered for a moment, and suggested: "The bullet is not big. Two blades exert force at the same time. There is no big problem of drilling through the metal. The spiral groove is too deep, it is too shallow to ship metal slowly, and the air resistance is high. This requires you to try it slowly. If possible, you might as well make three blades and one more spiral groove to ship metal. Is it more penetrating? Of course, you are experts and an offensive reference. In addition, I want to name this bullet Dragon Tooth Bullet to commemorate our former Dragon Tooth Squadron number. Is it OK?"

"No problem, three blades?" Dongfang Ling agreed and began to ponder.
Chapter completed!