Military Review

Large-caliber sniper rifle J50

15
Already for five years on the firearms market weapons there is a sniper rifle company JARD J50. During this time, the weapon has established itself as a not entirely unambiguous model, having both positive and negative qualities. Nevertheless, this rifle is ahead of many other samples of self-loading large-caliber sniper rifles in firing accuracy. In this article we will try to figure out what the secret of this weapon is, and also try to find the negative qualities of a rifle. Yes, I’m harmful, if you can’t shoot from something, you should definitely criticize it, all of a sudden JARD organizes special weapons tests for me personally ... Eh ... Dreams of dreams ... But back to the essence of the issue.


I think that no one will argue with the moment that self-loading rifles will always lose in accuracy and accuracy of shooting rifles with manual reload, of course, with the same ammunition. The reasons for the lower accuracy are usually several, the first of which is the work of automatic weapons, in which the moving parts inside the receiver have a strong influence on the effectiveness of fire, which can be seen even at medium distances. The second reason is the barrel of the weapon, which cannot be freely weighed in self-loading weapons, since powder gases are removed from the barrel bore, which requires additional parts in the weapon design that are rigidly connected to the barrel. Or in the case of more rare, when the automation system is built around the movement of the trunk, then the trunk can not show the same results, which shows a rigidly fixed thick-walled barrel that does not touch anything but the receiver. Since it is possible to fight the automation system in self-loading weapons, it cannot be completely excluded from the impact on the accuracy of fire, then to improve the performance of its rifle, JARD decided to try to cope with the barrel, making it free-suspended in a self-loading sample.

The goal that the designers set for themselves was naturally unattainable. However, it was possible to get closer to a near-perfect result, which was done. The solution, which was used in a large-caliber sniper rifle J50, proved controversial, but quite effective. It was concluded in the use of automation with the removal of powder gases from the barrel with the impact of powder gases directly on the bolt carrier, without a piston. In other words, the automation system is similar to the M16, but, of course, adapted for the cartridge 12,7x99 and the mass of the gate group. This solution allowed to fix the barrel of the weapon only in its place of attachment with the receiver, and leave the tube for removal of powder gases without attachment, fixing it only on the barrel. To protect this outrage from external influences, most of the trunk is covered with a casing, but the trunk itself does not touch it. The barrel bore is locked on the 9 stops for the breech breech.

The appearance of the weapon is rather angular, but in this case it looks interesting and unusual. On the right side is a handle for cocking the shutter. The fuse is apparently a push-button, but I don’t presume to assert. Another point of interest is that the weapon can be with different butts. In the first versions, the rifle had a fixed butt, without the possibility of adjustment in length, but with an adjustable height for the cheek. In the latest versions of the weapon, the butt is replaced by an adjustable one stepwise in length, similar to that used in the M4, that is, without a stop for the cheek, although no one bothers to put it on. In addition, the butt is now folded to the left, which reduces the size of the weapon during transport.
The length of a rifle with a barrel length of 762 millimeter is equal to 1473 millimeter. Weapon weight - 11,5 kilogram. The device is fed from detachable box stores with a capacity of 5 cartridges.

Well, now the main thing. Imagine a bucket with two holes, one with a diameter of a finger and the other with a fist. Having filled up a small hole, we, of course, reduce the speed of water flowing out of the bucket, but we will not fix it, and the decrease will be such that you will not even notice it. Similarly with this rifle. It seems that one of the reasons for less accuracy was eliminated, but the main one remained. Therefore, at least shoot me from J50, but I will not believe in the effective range of firing at enemy manpower on 2000 meters. Unless it will be a 30 man, standing motionless in a crowd. So that the weapon is interesting, but it’s impossible to talk about its unique characteristics, which is confirmed by those people who happened to get acquainted with this device, noting that this sample does not exceed other self-loading large-caliber rifles. Nevertheless, any undertakings are useful, so the J50 weapon is quite worthy of attention.
Author:
Photos used:
guns.yfa1.ru
15 comments
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  1. Mikhado
    Mikhado 3 June 2013 08: 38
    +2
    Greetings Cyril! Well, here and apply an external drive circuit, which we talked about. Anyway, it’s cumbersome garbage, but the accuracy would be on the level. This means pneumatics, shot, pressed a button - reloaded, without taking his hands off the weapon, without stopping observing the target.
    1. bazilio
      bazilio 3 June 2013 09: 39
      +4
      Quote: Mikhado
      Well, here and apply an external drive circuit

      Yes, you’re right, this could give an increase in firing accuracy comparable to the accuracy of boltoviks

      Quote: Mikhado
      Anyway, cumbersome bullshit

      Rather, it is so bulky, 11 kg. If you put an external drive, this is a couple more kg of weight. How much is justified- HZ.)))
    2. scrabler
      3 June 2013 11: 24
      +3
      Good morning) You can even organize without pneumatics, a separate cartridge weak for recharging, something like Flaubert's cartridges. I think quite enough and the weight will not add a lot of grams 500-1000 maximum.
      1. bazilio
        bazilio 3 June 2013 13: 45
        +1
        Also an option. You can also dream up, for example, automation with the removal of powder gases with a delay. place a valve in the vent pipe in front of the gas chamber, which allows gases from the barrel to enter the gas chamber, but prevents gases from entering the barrel. The gas piston, valve and gas pipe must block the gases in the gas pipe until the bullet leaves the barrel, i.e. the gas piston must be locked. That's just how to undo it, I haven’t come up with it yet.
        1. scrabler
          3 June 2013 14: 44
          +1
          There is still a thought. Remember knives with a throwing out and folding blade automatically. Inside, two springs cost one to stretch the other to compress when it opens and vice versa, although there are many options, even simplified with one spring. You can automate the recharge system and thus, the mass of the bolt group will suffice with the head. And the rifle itself will not become more difficult and additional pribluds such as cans with compressed air or weak cartridges should not be dragged. Only one spring will be added to the design and the locking mechanism will be changed. winked
          PS I'm inclined more and more to the idea that we will soon laughing
          1. bazilio
            bazilio 3 June 2013 18: 53
            +1
            Mikhado, Cyril, maybe it’s not too late to deal with patents? ))))


            Quote: scrabler
            Here I am more and more inclined to the idea that we will soon be laughing

            In some sort of sharagu type Tupolev)))) Since such smart, let's invent))
            1. scrabler
              3 June 2013 19: 29
              +1
              The fastest way to all of this is already patents, but nobody needs it (((
  2. avt
    avt 3 June 2013 09: 36
    +2
    request A kind of SVD and M-14 50th caliber. request Well, I don’t know, it would be necessary to listen to professional users - such an aggregate is needed. Here’s an assault of such a caliber as the Tulaks did, it seems clear. And here ? Maybe it’s still smaller, something like 9mm would be clever?
  3. bazilio
    bazilio 3 June 2013 09: 50
    +3
    It looks massive. I'm not sure that automation a la M16 significantly reduces the impact of automation on accuracy.

    " In addition, the butt is now folding to the left, which reduces the dimensions of the weapon during transportation."

    To transport such drina (11 kg), the carrying handle would not hurt.

    "Unless it will be 30 people standing in a crowd motionless"
    At the same time, in bright orange jellies and with a banner in their hands "WE ARE HERE"

    Honestly, I also hardly believe that with a self-loading fifty-fifty it is possible to get into a person from 2 km. If you get it, it is more likely an accident. Of course, if you shoot at a firing range from a shot position in calm weather on a fixed target, then maybe. I remember at the discovery they showed how vnapar with a barrel of 82 (I don’t remember exactly) dared for 2 yards at the training ground and seemed to get into the figure. But where is the guarantee that they fired for 000

    Cyril, thanks, as always pleasing with interesting reviews
    1. Ch0sen1
      Ch0sen1 3 June 2013 16: 42
      +3
      He only got as far as I remember from the fifth or sixth shot, and this is in the greenhouse polygon conditions ......
      1. bazilio
        bazilio 3 June 2013 18: 55
        +1
        Quote: Ch0sen1
        As soon as he hit, as far as I remember from the fifth or sixth shot

        if not from the 10th of the 20th, but the jambs then fixed the installation)))
  4. Storyteller
    Storyteller 3 June 2013 11: 02
    +2
    I can say stupid, but why not use a movable muzzle brake for reloading? Yes, even hook it to the crank mechanism?
    1. bazilio
      bazilio 3 June 2013 19: 02
      +1
      Not sure, but-
      moving DTK moving will create additional vibration when moving.
      DTK on the barrel, the crank mechanism will be connected with the bolt frame, that is, the free-hanging barrel will turn out not with a sovus.
      Although, if the whole system will begin to work only after the bullet leaves the barrel, then the result may be. But there is one problem - the DTK (as you suggested - mobile) is likely to start moving even before the bullet takes off, since it will be affected by the gases that burst the bullets ahead.
      1. Storyteller
        Storyteller 3 June 2013 19: 38
        +1
        This "reload" muzzle brake should not hang from the barrel, but on a separate frame that can be supported by the bipod. As for "nimble" gases, this problem is solved by selecting a return spring.
        1. bazilio
          bazilio 3 June 2013 21: 45
          0
          Now it became clearer. Another question arises. In order for the "recharging" dtk to be recharged by you, it must move backwards, therefore the gases must push it back, which will increase the recoil perceived by the shooter, or negate the action of a conventional dtk. Although ... if the braking DTK moves forward, then there are several options to make the bolt carrier move backward when the DTK moves forward, the most out-of-gauge of them is a toothed rack attached to the DTK, a second toothed rack to the bolt carrier, and a gear between the racks.
          1. Storyteller
            Storyteller 4 June 2013 07: 35
            +1
            It’s easier to attach the TDK through the connecting rod on one side of the crank, and the bolt frame through the other connecting rod on the opposite. In this case, the TDK moving forward will push the bolt frame back. As an additional plus - getting rid of the blows of the bolt in the rear position. By the way, the use of two connecting rods on different sides of the crank dynamically balances the system in a vertical plane. In addition, a cshm with sealed bearings is much less capricious than a gear rack.
            1. bazilio
              bazilio 4 June 2013 11: 40
              0
              But doesn’t it seem to you that KSHM will turn out to be too dimensional. The bolt group will have to roll back at least by the length of the sleeve, and in the case of 50 BMg it is 99 mm, that is 10 cm. What size should the connecting rod be in order to allow the shutter to be removed by 10 cm? I think it’s quite big. By the way, the DTK should roll forward 10 cm, respectively. There is something to think about.
              1. Storyteller
                Storyteller 4 June 2013 13: 40
                +1
                Well, then pull the cable through the block at the back. And the move of the TDK forward 100-130 mm is not so much grief.
  5. Ch0sen1
    Ch0sen1 3 June 2013 16: 45
    +3
    The scanty butt from the M-4 on the fiftieth caliber looks perverted, and how does it cope with the recoil? unless in the telescopic part the damper is integrated.
    1. bazilio
      bazilio 3 June 2013 19: 03
      0
      Quote: Ch0sen1
      The scanty butt from the M-4 on fiftieth caliber looks perverted

      unification, no? )))
      may hints of modularity)))
  6. alex-cn
    alex-cn 3 June 2013 16: 58
    0
    in general, a roller hangs in the tube, I don’t know how much it’s staged, a sniper got into some Central Asian from 2500 meters (or yards you won’t scatter, but the difference is 10%), it’s also from 4-5 shots