"What an arsenal!" Huang Shi looked at the piles and boxes of guns and bullets on the ground, and said the same thing as he did last night.

Last night, after Shi Wenbo took the M9 pistol in Huang Shi's hand and killed the two banana men on the spot, Huang Shi took them away along with the other things in the room, and then the three of them swaggered to the warehouse of the gun shop, and as soon as they opened the door of the warehouse, they saw the dense boxes inside, and Huang Shi said at that time, "Wow, what an arsenal!" ”

"Hehehe." Swenbo also laughed, because the guns and bullets here were collected, and they could really arm a company of troops.

"Old history, this is CZ-858's." Huang Shi pulled the long box on the far left, and looked at what was written on it, and recognized that it was the first semi-automatic rifle he saw in the gun cabinet when he stepped on the spot in this gun shop.

"Hmm." Shi Wenbo looked at the black inscription on the box, then nodded in response.

Bypassing the long boxes containing CZ-858 rifles, Yellowstone came to a pile of dark blue boxes again.

"And what kind of guns are in these boxes?" Because each rifle is of different lengths, and it is produced by gun factories in various countries, it can be distinguished from the appearance of the box that it is a different gun, but what kind of gun it is, it needs to be seen again.

"This is a Remington-700 rifle." Shi Wenbo relied on his height and length, looked at it, and reported it to Huangshi.

"Ha Lu Ha, it's the same type we saw in the gun shop that day, no wonder they had to be in the middle of the store in the first place." Huang Shi laughed when he heard this, because at first glance, there were only two kinds of guns at most.

As the three of them walked and watched, they counted all the guns on the shelves one by one.

Walking to the back row of boxes, Swenbo introduced, "This is the Mocinagan rifle of the woolly bear......"

"Hairy bear?!" Huang Shi was stunned for a moment, and then reacted, this refers to the former Soviet Union or Russia, although he used to often go to forums, but he is not very familiar with these Internet black words.

Swenbo thought he didn't know about this kind of gun, so he explained, "This is also a famous gun, this gun is 7." 62 mm caliber, direct-acting principle, simple structure, few breakdowns, very good combat performance, combat rate of fire up to 10 to 20 rounds per minute, killing range can reach 2000 meters. ”

"2000 meters, this Soviet man is indeed a bull, I remember you told me that our Type 56 semi-automatic rifle can only go up to 1500 meters, which is a big gap compared to others."

Shi Wenbo and Bai Xiaohei couldn't help but "poof", "Lao Huang, you are so humorous, first of all, this Mosin Nagant rifle is not Soviet, but from the Tsarist period, and it was jointly developed by the then army colonel Mosin and the Belgian gunsmith Nagant. ”

"In 1891, they were installed in the Russian army in 1891 with the M1891 Mosin-Nagant M1891 rifle cartridge. It was also improved three times, especially in 1930, when the 1891-1930 rifle was improved, which was the quintessence of the classics. ”

Hearing Shi Wenbo say this, although Huang Shi's face is thick enough, but there is still a slight redness on his cheeks, he forgot that the naming of guns is common sense related to invention or production time, so he said, "I really don't know how to do this, who made me a military blind, by the way, why did the gun in the past have a longer range than now?" ”

Seeing that Lao Huang was ashamed to ask, Shi Wenbo was also a little proud, so he said, "This is the second thing I want to say." ”

After speaking, he opened a long box, pointed to it and asked Huang Shidao, "Take a look for yourself and find out what are the characteristics?" ”

Huang Shi looked at it, to be honest, with his eyes, he couldn't see anything at all, at most he could only see what was special about the appearance, by the way, could it be that there was no magazine, but it didn't feel right when he thought about it, the invention time of this magazine was good, obviously it wouldn't be that.

So...... So...... He scanned the body of the gun lying in the box several times, as if it were ...... It seems that ......, that is, the body of this gun is particularly long, and it feels longer than the semi-automatic and fully automatic rifles such as the 56 and a half, 63, and AR15 that he has used in the past few days.

"Uh, old history, I wonder if this barrel is particularly long?" Yellowstone was a little less certain.

"You're right, it's because it's so long, that's why it's so long. The longer the barrel, the more acceleration the bullet can get in the fixed track, and the farther it can shoot, but the farther it shoots, it does not mean that it can shoot more accurately, one is the longest range, and the other is the effective range, don't get confused. ”

"Effective range and maximum range?" Huang Shi repeated.

"yes." After speaking, Shi Wenbo went on to explain the effective range of the rifle, some people say that the trajectory of the bullet at a certain distance is relatively straight and stable, but in fact, the effective range of the firearm is not determined according to the stability of the trajectory, such as the US military 5. The 56 bullet is said to have an effective range of 400 meters, but at 375 meters of the warhead, there is a tendency to be unstable, and this is still after increasing the length of the barrel.

As Swenbo himself understands, the effective range is the distance at which the weapon achieves the expected accuracy and power requirements when shooting at the intended target. In other words, "hit what you want" and "kill what you want to kill".

For the time being, the effective range is generally guaranteed to be accurate, that is to say: if it exceeds the effective range, it means that there is no certainty of hitting the target, but the lethality is often more than enough, after all, you can punch the master to death.

Swenbo gave an example, for example, the U.S. military used to pierce an inch of pine plank as a person's lethal kinetic energy, that is, 78 joules, that is, as long as the warhead still has 78 joules of energy, it is enough to be lethal, such as full power 7. The effective range of the 62 rifle is generally 800 meters, but the lethal range is more than 3000, and the lethality is more than enough, but the crux of the problem is that the dispersion of the bullet at a distance of more than 800 meters is difficult to ensure that it hits a target the size of a human chest ring target.

Huang Shi and Bai Xiaohei nodded frequently after hearing this, after all, Shi Wenbo is still very good at the performance of guns, and listening to what he said can really lead to some insight.

Shi Wenbo saw that the two of them were knowledgeable, so he was willing to continue to talk to Lu.

"The effective range of this firearm is often the data given by the designer after it is finalized, from the perspective of the gun itself. However, in actual combat, due to the quality of personnel, the condition of firearms, the use of sights, as well as the influence of many factors such as ammunition and the use environment, as well as the way of use, the actual use distance is often within the effective range. ”

"For example, the 56 and a half we often talk about, the maximum range on paper is 1500 meters, the meter range is 1000 meters, and the effective range is 400 meters, but the actual combat range is often within 150 meters."

Seeing Huang Shi's disbelieving eyes, Shi Wenbo said with a smile, "This is true, it turns out that in our self-defense counterattack against Vietnam, according to the experience of the two-mountain round battle, our army used 56 and a half, and if 56 and a half continuous shooting, the actual combat range is even lower, only a few tens of meters." Therefore, the range of this actual combat use is personally defined, which is often a misunderstanding of designers. ”

"Of course, the effective range of this firearm is actually related to their respective calibers, generally speaking, the larger the caliber, the more charge, and the longer the range."

Swenbo paused for a moment and suddenly laughed, "However, the reason why the small caliber is 7 now. 62 medium-power bullets will be popular because the designers believe that 7. The range of medium-caliber full-power projectiles such as 62 is more than 800 meters, but in the 60s, soldiers used mechanical sights on the battlefield and searched for targets with the naked eye, and the target at a distance of 400 meters was difficult to see, and most of the firefights occurred within 300 meters, and reducing the power, so that the medium-caliber full-power projectile with a muzzle kinetic energy between 3000-4000 joules was reduced to a small-caliber bullet or an intermediate power bullet between 1300-2000 joules, which could make the rifle shoot automatically. Suppressed firepower at close range has been enhanced, so the effective range of current assault rifles is often set at 400 meters. ”

"Oh, oh." Although Huang Shi didn't understand Joule and other data, the physics knowledge he learned in middle school had long been forgotten, and he only remembered the nouns but not the substance, which did not prevent him from nodding frequently, and asked a question at the end.

"Old history, that means that in fact, it is meaningless to have such a long range, and it is meaningless to be too powerful, isn't it?" Because he will let Swenbo arrange to learn how to make guns after a while, he always has to have some data on these guns in his heart.

"Yes, generally speaking, the smaller the caliber and the lighter the warhead, the smaller the recoil impulse of the fired ammunition. With 7. 62 recoil compared to 5. The recoil of the 56 is 30% less. Those who have ever shot a gun know that the recoil is linked to the beating of the weapon, and the smaller the recoil of the gun, the easier it is to operate and use, and the higher the hit rate. By contrasting shots, it was found that 5. A rifle of 56 mm caliber is more than 7. The accuracy of the 62 is up to 20% higher. ”

"In addition, since the lethality of the bullet depends mainly on the flight speed of the warhead after hitting the target and the tumbling and deformation of the warhead after entering the tissue. The higher the flight speed of the warhead, the greater the intrusion force, the more severe the tumbling and deformation in the human body, and the greater the killing power. Now the experiments of encroachment prove that 7. 62 bullets have a more lethal effect in the human body than 5. 56 mm is much smaller. Due to the relationship between muzzle velocity and so on5. 56 guns to 7. The 62 bullets are more intrusive and lethal, and they are more injurious. ”

"I see." Huang Shi nodded, he really had a misunderstanding before, and thought that the range of this gun and bullet should be as far as possible, and the more powerful the better, but now he realized that this was not the case.