If the gun doesn't have a bullet, it may be nothing, and modern bullets, despite their very different calibers, are generally made up of a warhead, a propellant, a primer, a shell casing, and if you think the bullet is nothing more than that, then I can tell you that it is not as simple as you think. In modern bullets, in addition to special bullets, there are many kinds of bullets of the same caliber that are conventionally equipped by the army, which at first glance look the same, but in fact, the uses are not the same, and only insiders can see the mystery.
Soldiers will be based on the target and use, to the gun filled with different bullets, in order to distinguish the type of bullets, the top of the bullet circle is called the recognition circle, the general more common recognition circle color is green, black, colorless three, painted green bullets, known as tracer bullets, from the name can be seen, this is a kind of bullet that will glow, tracer bullets when fired ballistics are polished, dazzling and wonderful, but the existence of tracer bullets is not for a wonderful performance. Tracer bullets are the same lethal bullets, except that they are coated on the warhead or equipped with magnesium, barium, and other luminous agents at the bottom of the warhead. The reason why the tracer bomb is called tracer is by no means to say that the bullet will glow at night, and the word "trailing" in it is the meaning of guidance and traction, so the main use of the tracer bomb is to guide the target and correct the trajectory.
It is often said that bullets do not bend, the truth is that every one of them will turn. If a bullet is fired in space, it can naturally go all the way forward, and maybe one day it can reach the end of the universe. But on Earth, no matter how fast the bullet is, it will eventually stop, not only from the resistance of the air, but also from the gravitational pull of the Earth itself. A bullet that hits the target with precision, like a bow and arrow, advances in an arc.
The bullet, in its high-speed rotation, effectively reduces gravity and obtains a more stable trajectory. In our cognition, the bullet is spiraling forward in the "x-axis", but in fact, the flight of the bullet is a complex process. If you slow down the tail movement of a flying bullet, you will see that the tail of the bullet draws a circle in front of your eyes, and the entire warhead is flying forward in a spiral trajectory.
However, human beings often simplify the complexity, and there is a bullet that can be completely free of so many details, it is a "shotgun bomb". Like other bullets, the shotgun has a primer and a propellant, but it does not have a warhead. In fact, the secret of the shotgun shell is in the huge shell, which is composed of several small steel balls, and the steel balls move forward in a scattered state after firing. That's why the shotgun, which uses shotguns, is the only weapon in modern machinery that doesn't require precise aiming.
The bullet that leaves the chamber has great power, so do you have a little curiosity, where does the bullet go before it enters the chamber? After the bullets leave the factory, how are they safely transported to the army and even the battlefield? First of all, they need an ammunition box, and for the average person, it may be more difficult to see the ammunition box than to see the bullet.