Fan Yuhong was stunned.
Immediately afterward, he replied: "Of course, I can't rule it out."
However, it is believed that the deliberate wear of the barrel rifling and other structures will definitely lead to a great reduction in the stability of the shot, and even accidents, I am afraid that no one will go crazy" Yuan Youchong waved his hand and interrupted him: "Didn't you say it, Qingzhi is not an offensive weapon for some criminal gangs and criminals, but a deterrent item, and for them, the greatest significance lies in strategic significance rather than tactics."
"Well, the strategic significance is coming out."
Yu Chen rolled his eyes.
The corners of Yuan Youchong's mouth twitched, and he paused for a few seconds before he continued: "That's what it means anyway."
Guns are generally not used, and once used, if they are found, they will be destroyed. ” "Compared with the risk of being discovered, the shooting stability and failure rate are nothing, anyway, it really has to the extent of moving a gun, and it is impossible to be like a war, and it is impossible to suddenly break through dozens of meters like a war, and most of the shootings are medium and close range shooting, which can also explain the matter."
"So, ballistic stability, for them is a fart, artificially deliberately worn, even a dead saw, what is incomprehensible" Fan Yuhong's face was solemn, and he nodded and said, "That's indeed the reason."
But in this way, I'm afraid it will be difficult for us to lock down the suspicion."
Yuan Youchong didn't care, and asked: "Even if no one has tampered with it, can you find out the crime according to the bullet shell I mean, specific to a gun, and its number, not the model and production batch." ” "This," he hesitated for a moment, shook his head, and said, "It's very difficult.
You should know that normally speaking, at best, we can only do identity verification after finding the suspect qingzhi, and if we want to point to a certain gun, the conditions are quite harsh. ” "That's it."
Yuan Youchong spread his hands: "What's more, the crime Qingzhi has been manipulated, the specificity will only be stronger, and it will be more convenient for us to make the same determination afterwards." ” "There's still trouble."
Fan Yuhong said: "Normally, it is a bit difficult to find out the specific qingzhi directly, but it is not difficult to determine the manufacturing batch of qingzhi and the flow of the batch.
Yu Chen glanced at him: "What's the use of talking about this now?"
Fan Yuhong choked.
Yuan Youchong also said: "Even if it is not man-made wear and tear but loss caused by natural use, the barrel is worn to such an extent that it is impossible to find out the production batch." ” "That's right."
Fan Yuhong had no choice but to nod.
Yu Chen said again: "Old Fan, I know you are aggrieved, after all, you are engaged in technology, and you can't break through if you are hindered at the technical level, it will definitely be uncomfortable."
But you also have to know that although technology is developed now, it is not impossible for human factors to interfere with technical judgment.
So" "I understand."
Fan Yuhong interrupted him and said: "Technical appraisal should use data and facts to speak, draw objective conclusions, and should not be mixed with subjective emotions.
However, we are people and not machines, and the appraisal report and even the report work are guaranteed to be objective, no problem, and can be done, but if you want me to work without emotion, it is a bit difficult for a strong man. ” Yu Chen opened his mouth.
Fan Yuhong smiled self-deprecatingly again and said, "Don't worry, I have a sense of proportion." ” "Hmm."
Yu Chen could only nod.
But then again, Fan Yuhong is also old, and after being a technical police officer for so many years, Yu Chen naturally believes him.
Yuan Youchong asked: "In addition to the bullet shell warhead, is there anything else to report?"
"Yes."
Fan Yuhong immediately replied: "We combined the investigation results of the trace inspection department and used a series of technologies such as 3D modeling to make a simple on-site restoration animation. ” "Oh, what's included in the anime?"
"The approximate position of the shooter, height and weight, and design angle."
Fan Yuhong said: "And the shooter and the victim, in the words of you young people, simply understand, call it a position." ” "Move" Yuan Youchong smiled: "Then let's take a look." ” Fan Yuhong quickly asked his subordinates to bring the computer over and click on a video file for Yu Yuan and the others to see.
I have to say that this animation is really quite simple to build, and it can even be said to be rough.
The three sheds that were still erected at the scene were directly replaced by three color blocks of different colors, and the so-called shooter and victim were also made of several squares, and even the movements were very stiff.
But having said that, in such a short period of time, it is commendable to combine the clues and data obtained by the trace examination department for a series of processes such as 3D modeling, and then rush to produce such a more intuitive on-site restoration animation.
Although the technical team has always been this urine, even if they have enough time, even if they are given a few more days, the animation they make is like this After all, the technical team is not making cartoons, and the fundamental purpose is just to let the XGJG of the investigation team have an intuitive and specific judgment of the scene situation, and it makes no sense to do so delicately in terms of modeling and characters, just a waste of time.
If you have that energy, it is better to check the data several times to ensure that there are no errors and omissions.
For this kind of animation, Yu Yuan and the others have long been accustomed to it, staring at the computer screen seriously.
The animation is very short, but it is only about thirty seconds, and there is not much movement of the characters.
If you look closely, you can see that the rough figure is also marked, the victim is marked A, the shooter standing farther away is marked B, and the closer to the victim is marked C.
In the whole process, A, B, and C came to the scene from three directions, and after standing for a while, B and C took out their guns at the same time, and A moved to the right, and then took a few steps back.
Then the gunshot rang out, and the bullet came out of the gun, hitting A's eyebrows and shoulders almost in no particular order, A fell in response, B turned and left in the opposite direction, i.e., due east, while C fled the scene in a north-easterly direction.
Then, the "lens" moved away, and it can be seen that B and C did not change their direction, and they just went away.
That's it for the video.
Yu Yuan and the others frowned after watching the video.
"It's strange," after a few seconds, Yu Chen muttered: "Since these two guys shot at the same time, and the target was You Yongan, it stands to reason that they should leave together after killing people, how could they each go in different directions?"
"Your focus is still so crooked."
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Yuan Youchong's face was black: "It's easy to understand how to go, don't always stare at these side details, it's always more flexible and convenient for one person to get together than two people, and it's not easy to attract attention. ” "Well, yes."
Punishment and murder :