USSR 1941

After reading the comments, I found that many book friends think that the accuracy of Mosin Nagant is higher than that of the German K98K. This is a very interesting topic. Let me say a few more words here. It's not necessarily right, let's discuss the facts.

I believe book friends think so, most of them read the overwhelming post on the Internet saying that the accuracy of Mosin Nagant is higher than that of K98K.

I have seen such posts before, but they are obviously rumors, so I clicked on the upper right corner.

There are roughly three reasons why the online post thinks that Mosin Nagant has higher accuracy:

One: The K98K bullet is bigger, 7.92MM, and the bullet is heavier and the accuracy is of course worse.

This view is extremely wrong, and it can even be said to be contrary to the facts.

It is true that the large-caliber warhead is heavy, but at the same time its charge is doubled to provide it with a higher muzzle velocity...A very important indicator of accuracy is actually the muzzle velocity, which will be explained later.

You can refer to Barrett. Its warhead weighs 45.8 grams and has a caliber of 12.7MM. According to this theory, its accuracy should be far inferior to that of Mosin Nagant, but the opposite is true.

Two: K98K has a large recoil, so the accuracy is poor.

This is also extremely wrong and even contrary to the facts.

The recoil force is due to the large amount of charge, which means a higher muzzle velocity, and a higher muzzle velocity means higher precision... But ordinary people's thinking is that recoil means vibration, so the accuracy is lower .

You can also refer to Barrett, its recoil is not low, if this reason is true, Barrett's accuracy should be lower than Mosin Nagant.

Three: The K98K has a short barrel and the Mosin Nagant has a long barrel, so the latter has better accuracy.

This is the only reason that makes sense, because the longer barrel means that the longer the distance in the barrel, the greater the rotational force of the rifling, so the autorotation is faster and the flight is more stable.

But this is not a determining factor, it can only be said to be a secondary factor, and even sometimes affects accuracy.

Investigate its reason, should talk about the problem of precision and muzzle velocity.

There is a characteristic of the bullet flying in the air, that is, the bullet is very stable when flying at a speed higher than the speed of sound. Once the speed drops below the speed of sound, the offset will increase in series.

therefore,

There is a saying "Look at the gun first, look at the bullet". For the accuracy, it is not the gun that plays a decisive role, because the manufacturing process and rifling of the gun are actually similar, such as K98K and Mosin Nagant... In fact, Mosin Nagant Gan's manufacturing process is much rougher than that of the K98k.

The amount of charge of the bullet and the friction of the rifling determine that the bullet has an initial velocity at the moment it is shot out of the barrel.

This initial velocity will gradually decrease due to the resistance of the air, and when it decreases to the speed of sound, it is basically its range, that is, its accuracy.

Of course, different guns will have some subtle differences. For example, as rough as the AK47, the range of the gun itself is lower than the distance at which the bullet drops to the speed of sound due to the vibration of the gun itself, while the M16 has a certain range when the bullet drops to the speed of sound due to its excellent production. Accuracy, so the range is slightly longer.

If you know this, it is easy to understand one point: an important data of accuracy is the initial velocity, and any article discussing accuracy regardless of the initial velocity is a hooligan, you can click the cross in the upper right corner to turn it off...

Therefore, it is not to say that the longer the barrel, the higher the accuracy, because the longer the barrel will cause the bullet to lose kinetic energy due to excessive friction in the rifling and reduce the muzzle velocity.

Then, the brothers only need to compare the initial velocity of the two to know the accuracy.

Another: In 1942, the Soviet army was still equipped with many 1891 Mosin Nagants. This rifle was discontinued in 1926, that is to say, the latest one was also placed in the warehouse for 16 years. It is hard to imagine that the accuracy of this rifle will be It is higher than the K98K just produced.

The improved 1891/30 type was put into production in 1930 and was not fully equipped until 1943.