I said it looked familiar. Why not correct the wind direction deviation another day?
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Upstairs? A 50BMG bullet can indeed reach the muzzle velocity level of 1020m/s, but it needs at least a barrel with a length of 1300mm. And increase fees. However,? The barrel length of M82 is only 737mm. The initial speed is only 853 m/s; ? Even the muzzle velocity of M2HB heavy machine gun (barrel length 1 143mm) is only 887m/s. 。
In addition, the armor-piercing incendiary bomb (API) is widely used in 50 BMG. The killing mechanism is quite different from that of traditional solid projectile. Not only rely on the kinetic energy of the warhead, but also use powerful drugs. reference/view/2 134549 . htm # 5
"The bullet rotates at high speed, which will form an air vortex and crush human tissues" is sheer nonsense. In the words of SWM500, it is "what a big egg".
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The bullets in the movie fly slowly in the mirror. There is no vortex around the warhead. Is it "shock wave"? Bo? The warhead compresses the air in front of the warhead when flying at supersonic speed. Causing a surge in air pressure and generating shock waves. And spread around from the warhead. Shock wave is the main drag source of supersonic flight.
The rear of the warhead is separated by the air in the boundary layer. The generation of negative pressure leads to the generation of vortex (similar to the wake of a ship). That's not caused by the rotation of the warhead.
On the other hand? If the vortex around the bullet is strong enough to tear the human body apart, according to Newton's law, the action and reaction of force. Bullets will also receive the same reaction force as air. A warhead with such a large air resistance? How can it be used for remote shooting?
In the adult body, water accounts for about 70% of the body weight. The bullet entered the human body. Like a stone thrown into a pond? There will be ripples in circles. This ripple is the shock wave. Similar to explosion shock wave, it can damage soft tissue and lead to non-contact fracture. So we feel "exploded" when we see a bullet hitting the human body. The shock wave spread from the warhead. Push the surrounding tissues and muscles to expand around. Squeeze nearby organs; ? Because the surrounding muscles are expanding outward, the wound in the middle is enlarged and negative pressure is generated. Inhale the outside air into the body. Until it reaches the maximum value of expansion. This is called "instantaneous hole" in wound ballistics. The bullet went through the body. Remove the broken muscle tissue. The "instantaneous cavity" is closed but cannot be completely healed. The rest is called a "permanent hole". If you don't believe me, you can throw a stone into the water. You can see the water separating around. Then a big spherical bubble is formed. Finally burst into countless small bubbles. After the ripples dispersed, it returned to calm.
American police like to use hollow pointed bullets (hollow? That's right. But that's a pistol bullet. The hollow warhead destroyed the shape of the warhead. Large air resistance leads to a sharp drop in range; ? And the resistance distribution is uneven. Destroy the resistance distribution of warheads. The shooting accuracy drops. Long-range shooting never uses such a warhead. Only some hunting bullets will be used to deal with large prey such as deer and cattle. And most of them are around 250m, not more than 400m m.
The whole warhead of 408CT is made of copper-nickel alloy. Call it solid? Bullets. ? The errors caused by the traditional "copper skin+lead core" armored bullets in the assembly process are avoided. Moreover, the tolerance of cutting is much smaller than that of stamping.
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Finally, post a ballistic comparison chart. .50? The difference between BMG and 408CT at different distances.
The unit of height is inches. 1 inch = 25.4mm?
The unit of range is code. 1 code = 0.9 144 m.
For reference only.
What do you want to do?
Dismantle and load the gun? Or live ammunition? Process flow? Ballistic test? You choose. I will stay with you.
Or,? If possible, do an experiment with the data I gave. Besides,? The "theoretical data" you despise? Most of them are not found in books.