How did the bullet get out of the gun chamber? How many cameras were used?

It's troublesome to shoot bullets, which is not allowed by ordinary people, except in the shooting range or military units, because it's convenient to check guns. At present, the forms of shooting bullets are mostly industrial and military special high-speed cameras and all-black B-door shooting. High-speed cameras are invisible to most people. It has been said before that the shutter can shoot at a speed of11million seconds or even higher. And gate b shooting. In a completely dark room, open door B and prepare a high-speed flash. The muzzle has a device similar to a high-speed trigger (enameled wire or something else), and the initial velocity of the bullet after leaving the chamber is about1000 m/s. Calculate the time that the trigger device travels on the lamp and the distance that the bullet travels during this time, and then determine the position of the camera from the muzzle. When the bullet comes out, it will break the trigger device and transmit it to the lamp, which will flash in the state of camera door B, and then leave traces of the bullet. Or use a high-speed X-ray machine directly. .

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