Everyone talked a lot. There is a clear difference between space and the earth. Mainly focus on a few: oxygen, air pressure, and I will add another temperature. Now these problems are explained by common sense.

First of all, what is space? Compared with the earth, outside the atmosphere, we can see space. Although there are some parts, relative to the earth, this is no problem. And it has the main space physical characteristics such as no atmosphere, microgravity and low temperature.

Oxygen: the chemical composition of bullet propellant, which does not need oxygen to support combustion. The shell is sealed and does not contact with air, and its chemical reaction depends entirely on itself. This is the same as the second start of the rocket in space. In fact, the landlord has solved this problem with common sense.

Air pressure: As we all know, a standard atmospheric pressure 1 cm2 is about 1 kg. The cross-sectional area of the 7.62mm bullet is about 0.45cm 2. One of the ex-factory standards of the bullet: the binding force between the warhead and the shell is not less than 50kg. More importantly, at low temperature, gas will contract. It is also impossible to maintain atmospheric pressure in the housing. Therefore, even in absolute vacuum, the influence of air pressure on the warhead binding force can be basically ignored.

Low temperature: in fact, the low temperature at the poles of the earth is similar to that in the adjacent space. One year, the low temperature in Antarctica was about 80 degrees below zero, which was similar to that in space. And shooting at the poles is no problem. It is true that low temperature has some influence on the combustion of gunpowder, but the chemical composition of primer is similar to that of passivated mercury, which is mainly caused by extrusion and impact. As long as the striker is normal, firing is not a problem.

Of course, we can also talk about some spatial phenomena such as absolute temperature, super gravity and super high temperature. , thus causing the disintegration of steel. But that's a drag and there's no point in discussing it. We are talking about the general difference between the ground and space!

So it can be said that if you shoot in space, the bullet can go out. Only the explosive force of gunpowder is less affected by low temperature, but the range is close to infinity and the trajectory is straighter. So it's more lethal than on earth.