Why aren't bullets designed to hit and explode? Isn't it better?

Let's start with the conclusion: because it's unnecessary. That's a good idea. If the bullet can explode, then when the bullet hits the human body, the explosive force will tear all the organs around it. So the corpsman can't save it if he wants to.

First, let's see why bullets can kill people. When the bullet leaves the chamber, it rotates at high speed under the action of rifling. If this warhead hits a person, then a lot of energy it carries will instantly directly tear the skin in the contact area. This kind of lethality is already very strong, and it is not necessary to enhance the power through built-in explosives. Moreover, small caliber bullets are not easy to be filled with explosives, and some large caliber bullets will fill various contents inside the warhead. Used to increase strength.

For example, some large-caliber heavy machine guns and sniper rifles will use armor-piercing bombs, high-explosive bombs and incendiary bombs according to different targets. Of course, there are also two kinds of bullets that combine the advantages, such as the armor-piercing bullet fired by the Deshka heavy machine gun. This kind of bullet is very useful in early air combat. Because the main fuel of the aircraft at that time was aviation kerosene, incendiary bombs could ignite the fuel of the aircraft, and it was not a dream that a bullet paralyzed an aircraft.

In fact, in the final analysis, the bullet was filled with explosives and became an explosive bomb. It's not that no one has thought about it. It's just that this kind of bullet is difficult to manufacture, and the power of the bullet has increased, and it is not filled with any substance. Therefore, for the sake of cost performance, it is good to use solid bullets. Because the guns in the hands of soldiers are still aimed at the people-oriented goal.

There is only one standard for weapons used in war: whether they can quickly destroy and kill the enemy with the highest efficiency and the lowest cost. Let others lose their fighting ability. So is the bullet. One bullet with two sandwiches may be easier to produce. If the quantity is large, it will be a test for the military industry. Moreover, no matter how much explosives are added to a bullet, the explosive power cannot be the same as that of a 155 mm shell.

As we all know, guns and bullets will keep spinning at high speed after they are fired. The purpose of this rotation is to improve the stability of bullets and reduce the dispersion of bullets. However, if too many other substances are added to the warhead, the flight trajectory of the bullet will be deviated and the walking of the bullet will be increased. For example, the U.S. military once did an experiment. When using tracer design, the dispersion of machine guns would become much larger. Therefore, in order to give consideration to both dispersion and indication, modern machine gunners will use a variety of bullets arranged in a certain order to overcome them.

And after adding explosives, the bullet's armor-piercing ability will also be weakened. For military weapons, armor-piercing performance is very important. Because enemy soldiers also wear corresponding bulletproof vests, they must wear bulletproof vests to kill the enemy. For the police, if the bullet explodes, it is easy to threaten people and hostages around. After all, even Russian special forces will put the safety of hostages first. As for the fact that Alpha Special Forces destroyed the hostages first, listen to it as a joke.