Canadian snipers use McMillan TAC-50 sniper rifle, with an effective range of 1800 meters, which is only a little more than half of the sniper distance. By the way, Canadian snipers occupy three of the top five longest sniper distances in the world.
That is to say, after shooting, if the target has the quality of a 100-meter Olympic athlete, it can run 100 meters away, even if it sings in small steps, it can move 10 meters away, but the hit terrorist stays where he is and is hit by a bullet destined to be.
As soon as the bullet comes out of the gun chamber, its speed begins to decay, which is mainly affected by air resistance, gravity of the earth, centrifugal force of bullet rotation, rotation of the earth, etc ... So the bullet will fly slower and slower and its trajectory will be lower and lower. Take the 12.7 mm rifle used by Canadian snipers as an example. Its initial velocity is 850 meters per second. If the speed is constant, it only takes 4. 16 seconds to fly 3540 meters. In fact, the terminal speed of the bullet is already lower than the speed of sound.
Barrett sniper rifle shooting, its caliber is 12.7mm, the same as TAC-50 sniper rifle.
The question now is, if someone happens to see the enemy shooting at him in the distance, can he avoid the bullet in time? This question is answered in mythbusters.
They first measured the flight time of the bullet at183m (200 yards), which was 0.23 1 sec. At a distance of 457 meters (500 yards), the flight time of the bullet is 0.597 seconds; At 1097 meters (1200 yards), the bullet's flight time is 1.7438+0 seconds.
Mythbusters's method of measuring the bullet's flight time is ingenious. Set a device in front of the muzzle. When shooting, the bullet trigger switch starts timing, and when the bullet hits the target, the switch is turned off to stop timing.
According to people, it takes about 0.49 seconds to dodge after seeing the muzzle flame, which is converted into the shooting distance. This limit state is about 366 meters. In other words, theoretically, the enemy fired a shot at you at a distance of 366 meters. At the moment of shooting, you see the muzzle flame, and you can avoid it with the fastest reaction speed, so you may avoid this fatal shot.
People's reaction test is to dodge when they see a flash. After many exercises, the conclusion is that the brain reaction time is 0. 1.25 seconds, but the body is much slower, which takes 0.49 seconds.
But here's the problem. After verification, the farthest distance that human eyes can see the muzzle flame is less than 200 meters, so you can't hear or see the enemy shooting at you from 200 meters away.
The distance of 457 meters has finally escaped, but don't imitate it in real life.
"mythbusters" finally changed into a special blank ammunition that can produce a powerful muzzle flame, and pushed the experiment again. They fired blanks from a long distance with rifles. When launching, they started a paintball gun with delay function and put it in front of the experimenter. The time is set to the time when the real bullet hits, and the experimenter avoids the paintball gun bullet after seeing the muzzle flame-the final result is that at a distance of 457 meters, a person with good eyesight like an eagle eye can avoid the deadly bullet when seeing the fire when the rifle is fired, and will be hit below this distance.
That is to say, in real life, if a sniper shoots at you, you will die as long as the other side takes aim. This kind of thing only happens in movies.