男人的天堂亚洲国产AV

  I believe that book lovers think so, most of them read the overwhelming posts 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.

  Online posts believe that Mosin Nagant has higher accuracy for roughly three reasons:

  1: The K98K bullet is larger, 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.

  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.

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

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

  The recoil 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 long barrel means running a longer distance in the barrel to obtain more rotational force for the rifling, so the rotation is faster and the flight is more stable.

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

   The reason should be to talk about the problem of accuracy and initial 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 that "look at the bullet before looking at the gun". 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 The manufacturing process of Nagant is much rougher than that of K98k.

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

  The 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...

  So, it does not mean 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, 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.

  (end of this chapter)