In addition, the "38 big cover" is 1275 long, which can be said to be the longest rifle among the military rifles of the main participating countries during World War II, which is more than Mosin used by the Soviet Red Army.From the appearance, the whole gun appears very slender and compact, clean and neat, so that it is more convenient to operate the gun, unlike some rifles, which have a lot of "fragmentation" in appearance.It is also the longest barrel of the various main battle rifles of the World War II era.There are 4 right-handed rifling wires inside the barrel, and in order to pursue shooting accuracy, the rifling lead is determined to be 200, which is the smallest among all kinds of rifles at that time.Although it was also the smallest of all rifles at the time, after the bullet hit the target, it still had enough penetrating force and was not easy to roll.It is said that the "38 big cover" is relatively accurate, which is naturally directly related to aiming.The shape of the crosshair of the "38 big cover" is "" shape, with the dovetail groove and the front sight constellation, it can be adjusted horizontally, and there is nothing special about it, the early production of the "38 big cover", there is no front sight wing, and the later production has the front sight wing.The ruler of the "38 big cover" is different from the plate-shaped arc ruler of the general rifle, it is a "frame" ruler that can be erected, with 3 notch doors on it, of which there are 2 notch doors on the gauge frame plate, and 1 notch on the vernier to shine on the door, and there are 3 ways to use it accordingly.When the gauge frame is used in the state of pulling forward down, the shooting distance corresponding to the notch on the gauge frame plate is 300; When the target is above 400, then the gauge frame is erected backward and the vernier is moved up, and another notch on the gauge frame plate is used to illuminate the door, and the corresponding firing distance of this notch illuminating the door is 400; When the target is above 500, then make the ruler frame still stand up, move the cursor down to positioning, use the third notch on the vernier to illuminate the door, and the corresponding firing distance of this notch illuminating the gate is 500; When the firing distance is greater than 500, the vernier is moved up one by one, so that the gap on the vernier corresponds to the distance from the target.In the later production of the "38 big covers", some use three holes to illuminate the door, the purpose of which is to try to use the eyelet to offset the aiming error, so as to simplify the aiming training process of the recruits.However, practice has proved that the hole on the "38 big cover" is too far away from the user's eyes, and it is not convenient to aim, especially at night.In the form of the position of the relationship between the crosshair and the ruler such as the "38 big cover", the hole is obviously not as convenient as the notched door.The move of "38 big covers" to change the hole is self-defeating.and the distance to reach the peak of the use density is around 100.At this time, you can also take advantage of a little-known advantage of the vertical frame ruler, that is, when the firing distance is about 50 to 100, you can erect the ruler frame, and put the target and the front sight in the vertical frame at the same time, for general aim and rapid shooting, if the shooter has received a certain amount of training, the gun is not a problem. ”Xu Hongying paused and said: "That is to say, the effective shooting distance of the 38 big cover is about 450 meters, and the distance of this wine gourd should be about 400 meters, so you can try it" aa2705221: