Military Review

Stiletto demonstrates the effectiveness of its armor piercing cartridges.

Stiletto demonstrates the effectiveness of its armor piercing cartridges.

The photo shows a hole punched by a Stiletto bullet in a steel sheet. Also shown is the length of a tungsten core. During the tests, the cartridge retained its sharp-pointed shape after penetrating the armor.

Armor-piercing cartridges manufactured by the British company Stiletto Systems, which passed several test programs according to NATO standards, are in high demand among Ukrainian special forces operating in the Donbas.

One of the test centers was the Belgian Royal Military Academy (Ecole royale militaire), which issued an opinion in the 2014 year, which said that Stiletto ammunition can have the same effect as the popular FN P80 and CBC armor-piercing cartridges, but they need less the initial speed is 334,7 m / s, whereas the cartridges FN P80 and CBC AR develop 959 m / s and 928 m / s, respectively.

Further work was carried out at Cranfield University in the UK. According to the results of these tests, it was concluded that Stiletto’s 13 and 14 bullets were able to penetrate 15 mm and 17 mm thick sheets from HARDOX 450 hardened steel to 454HB hardness from 208 and 164 meters respectively. Alexander Kalachev, chief engineer of the Stiletto company, said that the bullets retain their shape after piercing armor.

Recent trials have been conducted in 2017, the Ukrainian Central Research Institute of the arms, in the process of comparing bullets caliber Stiletto 7.62x53.3 mm (.300 WSM; .300 Winchester Short Magnum) and 5.45x39 mm cartridge 12.7x108 mm armor-piercing incendiary tracer bullet BZT-44 and a mm 7.62x54 cartridge with an B-32 armor-piercing incendiary bullet. The target for the BZT-44 armor piercing bullet was ARMSTAL 500 armor plate 20,5 mm thick. The bullet B-32 was shot at a sheet of ARMOX 500 steel with a thickness of 14 mm. The BZT-44 bullet stuck in the 20,5-mm plate, while the 7.62-mm Stiletto bullet pierced it completely. The B-32 bullet could not penetrate the 14.5-mm plate, while the Stiletto 5,45-mm bullet completely pierced it. All shooting was carried out from a distance of 220 meters.

Another comparison. Armor-piercing cartridge RUAG .300 Win Mag Swiss P has a 12,7 gram bullet with a tungsten carbide core. With a pressure in the chamber of the order of 4300 bar, the bullet develops an initial speed of 855 m / s and can pierce a sheet of steel with a thickness of 12 mm and two layers of Kevlar from a distance of 250 meters. However, with the same pressure in the chamber 4300 bar, the bullet of the Stiletto 7.62x51 mm armor-piercing cartridge with a brass sleeve develops a maximum initial speed of 830 m / s. The bullet is able to pierce an armor plate 15 mm thick with a Brinell hardness 450HB from a distance of 600 meters. From a distance of 100 meters, this bullet completely pierces the armor with a hardness of 450НВ thickness 20,5 mm; however, comparative statistics on this parameter is not available for the .300 Win Swiss P cartridge.

Various configurations of Stiletto cartridges; the three bullets on the right with a metal-ceramic core of 13 grams of gram have armor penetration comparable to the armor penetration of 12.7-mm bullets

Stiletto is a relatively new player in the ammunition market and therefore does not hide the test results, as well as armor plates used. Kalachev believes that the difference between Stiletto and its competitors lies in the software used in the design process. “Each bullet is designed for penetration of armor of a certain thickness, after which its dimensions are determined programmatically. Each cermet core (tungsten carbide) is designed to completely fill the brass sleeve, and where possible the core must be at least the same length as the thickness of the armor it pierces. ” This approach is different from the approach of many competitors who produce armored piercing cartridges with a tungsten core of substantially smaller size.

Kalachev also noted that Stiletto's cartridges can be either bimetallic or brass, and their effectiveness is the same. The first cartridge creates pressure 2900 bar, and the second from 3300 to 4000 bar. He also noted that bullet bullets were fired from the brass sleeves, which were used several times and, despite this, showed the same characteristics as the new brass sleeves. According to Stiletto, its ammunition is manufactured according to NATO standards and can be manufactured on standard production equipment.

Stiletto cartridges are often compared with larger-caliber cartridges in order to demonstrate how larger-caliber weapons can be replaced with cheaper and more user-friendly options. A typical large-caliber sniper rifle, for example, 12,7-mm M107 (Barret M82), is able to penetrate 20 mm of armor from a distance of 100 meters and weighs 13 kg, and cartridges to it cost 10 dollars per piece.

The same armor-piercing effect can be achieved by replacing it with a standard 7,62 mm caliber sniper rifle or even an assault rifle weighing just 6 kg, while Stiletto cartridges cost a dollar apiece. In addition, an average infantryman armed with an 5,45-mm AK-74 assault rifle can get ammunition that can penetrate armor 14 mm thick from a distance of 220 meters. This is enough to pierce the body of an armored personnel carrier of Russian production or disable the power unit of the vehicle.

Stiletto regularly demonstrates the capabilities of its ammunition, capable of penetrating from weapons small caliber modern body armor and thicker armor plates. With these munitions, the future soldier can be more effective in fighting armored targets without resorting to large-caliber weapons or artillery.

Materials used: Alex Alexeev
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  1. Kot_Kuzya
    Kot_Kuzya 5 March 2018 06: 37
    Rave. However, judging by the fact that any nonsense is being injected into the pots, and they do it with pleasure, then they also grab this article. The main thing is that they screw the valves and do not forget to jump, so as not to freeze laughing
    Hto not freeze, that m ... eh!
  2. Strashila
    Strashila 5 March 2018 06: 43
    "Kalachev also noted that the Stiletto cartridges can have either a bimetallic or brass cartridge, with the same efficiency. The first cartridge creates a pressure of 2900 bar, and the second from 3300 to 4000 bar." ... I did not understand humor ... if, according to them, 2900 bar is enough ... then why create a pressure of 3300 or 4000 bar ... how does the design of the sleeve affect penetration ... is it laying between the powder gases and the design of the weapon ... ??? “Each cermet core (made of tungsten carbide) is designed to completely fill the brass sleeve, and where possible the core should be at least the same length as the thickness of the armor pierced by it.” This approach differs from the approach of many competitors that produce armor-piercing cartridges with a tungsten core are much smaller. "... again highly intelligent humor ... that a soldier has a set of cartridges with a dozen bullet lengths and before he shoots he chooses ... no ... previously with a barbell behind eryat thickness of armor ... so here 19,7 ... and I only stayed at 19,5 feet ... do.
  3. Vard
    Vard 5 March 2018 07: 42
    All this works ... maybe ... with an almost perfect right angle ... it is a little skewed, and that's all ... the bullet loses stability and either collapses or goes into rebound ...
  4. Strashila
    Strashila 5 March 2018 08: 11
    You can not exclude the rigging of the test results ... by sight the whole metal is the same ... it will even show the same hardness ... but in fact it can have different viscosity ... judging by the picture it is hard and brittle. Therefore, the result may be different ... with external similarity ... photo for example, the behavior of the metal upon contact.
  5. Firework
    Firework 5 March 2018 08: 20
    very interesting idea
  6. igorspb
    igorspb 5 March 2018 08: 38
    That is, only Russian-made armor can be pierced? Interesting)))
    1. Spambox
      Spambox 5 March 2018 08: 58
      You can penetrate armor of any production, but here's the trouble with special ammunition, And in general with the quality of ammunition this is a fact (((
      1. Yeah
        Yeah 5 March 2018 10: 57
    2. Knizhnik
      Knizhnik 5 March 2018 11: 13
      "In the war with the Russian-terrorist forces in the Donbass, the Ukrainian special forces of the army and sniper of the National Guard in 2015 for the first time used new live ammunition, which were developed by the domestic engineering company" Stiletto Ukraine ""

      That's where the Russian-made armor comes from.
  7. alex-cn
    alex-cn 5 March 2018 09: 26
    Doubtful applications ... I always knew that to break through the armor they fought for high speeds. Maybe it plays a role here that the distances are small - up to 200 meters. And as for 12,7- even if it doesn’t break the vest, the recipient is still not a fighter for a long time.
    1. Kot_Kuzya
      Kot_Kuzya 5 March 2018 09: 33
      No bulletproof vest will save a bullet from a 12,7 mm caliber. A bullet of this caliber pierces the BTR-80 through two sides and flies on.
      1. Mihail28
        Mihail28 29 June 2018 04: 43
        And from a 152mm howitzer which vest will save?
  8. Knizhnik
    Knizhnik 5 March 2018 09: 48
    Wolfram carbide. Probably an expensive pleasure, however, like any special ammunition. Advertising?
    1. Uryukc
      Uryukc 5 March 2018 10: 26
      The same armor-piercing effect can be achieved by replacing it with a standard 7,62 mm sniper rifle or even with an assault rifle weighing only 6 kg, while Stiletto cartridges dollar apiece.
      1. Knizhnik
        Knizhnik 5 March 2018 10: 55
        - Will such a bullet be more expensive than samples produced by other technologies?

        - The cost of a bullet and a cartridge as a whole is determined mainly by the cost of the core. Tungsten, of course, costs more than steel. But you need to understand that powerful armor-piercing sniper bullets are needed for special forces and special tasks. Their price is adequate to the needs and objectives. We have a business plan for the production of ammunition - both in Britain and in Ukraine. In mass serial production, all types of our ammunition will be competitive in relation to the cost of producing cartridges at European capacities. And compared to purchase prices, this price is orders of magnitude lower. "
        1. zenion
          zenion 5 March 2018 15: 24
          The best bullet from fat. From the fat of a hungry pig. After the hit, the genes remained, she will bite into any metal until she eats and gets into her mouth. And then what happens to her is that of the ducks of Baron Munchausen. She comes out from behind and enters the mouth of another tankman, or sailor. It all depends on the length of the twine. Then she gnaws a hole at will and pulls them all out of the protection farts.
          1. Knizhnik
            Knizhnik 5 March 2018 15: 45
            You seem to be mistaken by the door, my dear, here is the fifth, and you need a sixth hi
            1. Kot_Kuzya
              Kot_Kuzya 6 March 2018 00: 42
              He’s just making pans of ridicule who hawk frank delirium.
      2. Knizhnik
        Knizhnik 5 March 2018 11: 27
        That is, taking into account the price of raw materials, the natural desire to earn money (the company is all the same), the understanding that this is special ammunition (and the advantages over the more expensive cartridges are obvious), the price will ultimately be corresponding, possibly not 1 dollar.
    2. Alexey RA
      Alexey RA 5 March 2018 10: 28
      Quote: Knizhnik
      Wolfram carbide. Probably an expensive pleasure, however, like any special ammunition.

      Well, how can I say ... during the war in the USSR, tungsten carbide was the main material for the cores of armor-piercing bullets and small-caliber shells (for PTR, TNSh and VYA-23).
      1. zenion
        zenion 5 March 2018 15: 30
        In the USSR, this alloy, or rather pressing, was called "Win". And they spent it mainly in turning and milling, for metal processing. Good thing, but fragile. Mineral ceramics are even harder, but even more prickly. There was such a factory in Chisinau and one of my friends made teeth. They were white, beautiful, but they had a bad property - they self-sharpened. When he moved to live in the States. He asked the dentist to rid him of these teeth. Diamond cannot be used for work in the mouth, and carbide milling cutters did not want to cut them because of the principle. They thought of breaking them with forceps and removing them from the pins.
      2. CTABEP
        CTABEP 6 March 2018 12: 43
        Yeah, only because of the high cost - there weren’t such rounds of ammunition in the troops. Therefore, the statement that the price is a dollar apiece is puzzling - well, have they developed some kind of super-technology there, which is doubtful for me.
    3. Yeah
      Yeah 5 March 2018 10: 58
  9. Jerk
    Jerk 5 March 2018 11: 03
    SPECIAL ammunition. The thing is necessary, but again - not very massive. And for Ukrainians - one minus. A NATO cartridge, you need to sew a jacket on it first - equip the whole army according to the NATO standard. What is CHEAPER, and therefore more massively possible - to rearm the army, or use heavier weapons?
    Although how to say, as far as I remember, Ukrainians have never done 12,7 for a hundred and eight, it may now be cheaper for them to buy snipers for NATO. But again - singly
    1. Knizhnik
      Knizhnik 5 March 2018 15: 49
      In an interview, a company representative mentions that the goods are for special forces. The equipment allows producing such bullets for any weapon of the Soviet and NATO nomenclature.
    2. Kot_Kuzya
      Kot_Kuzya 6 March 2018 00: 44
      They don’t even have ammunition factories there. There was one Lugansk, but that one was already in the LPR. Therefore, the pots you do not want, you have to go under the NATO standard weapon, because the Soviet ammunition stocks are huge, but not infinite.
  10. the47th
    the47th 5 March 2018 11: 11
    The B-32 and BZT-44 bullets have steel cores. They compared bullets to tungsten cores and steel. No wonder tungsten bullets pierce armor better. I wonder how cheap Stiletto rates its ammo?
    By the way, in order to incapacitate a person with a rifle cartridge, it is not necessary to pierce a bulletproof vest; the force of impact is enough for the soldier to lie down to rest.
  11. Operator
    Operator 5 March 2018 17: 50
    The armor-piercing bullets considered in the article were developed by the British company Stiletto Systems Ltd, founded by Ukrainian citizens - former employees of the design bureau of Barnaul Cartridge Plant CJSC (before 2012) A. Kalachev and R.V. Karpenko In Ukraine, they established a subsidiary company "Stіletto Ukraine".

    In the construction of Stilletto bullets, the developments made in Barnaul were used: an armor-piercing core made of tungsten carbide, a lead glass - a shirt and a brass shell. A feature of bullets is the increased size of the core and its pointed head part.

    All bullets, starting with the caliber 5,45x39 mm, have a high cost (due to tungsten carbide) and excessive armor penetration in manpower, protected by body armor, therefore they are recommended for use exclusively against light armored vehicles. However, due to the small size, bullets can disable armored vehicles only if they hit the engine or transmission precisely in vulnerable areas, which is difficult.

    In this regard, bullets are practically not used by any army of the world, including the Armed Forces of Ukraine, with the exception of the advertising campaign by the company "Stіletto Ukraine", which at its own expense delivered several hundred rounds of ammunition to the forces of the so-called. ATO.

    The Stilletto bullet, in addition to the excess weight of the armor-piercing core, has an unrecoverable structural defect - a parasitic lead glass that comes off at the moment of breaking through the armor barrier, which uses the kinetic energy of the bullet. The brass sheath covering the head also reduces penetration.
    For example, in a regular American pool M855A1 there is no lead glass, only the head part of the core is made of hardened steel, the brass half-shell does not cover the head part.
    1. bunta
      bunta 5 March 2018 21: 05
      Quote: Operator
      All bullets, starting with the caliber 5,45x39 mm, have a high cost (due to tungsten carbide)

      100 rub / kg. Will you take it?
      1. Operator
        Operator 5 March 2018 21: 13
        Tungsten shot (from an alloy of tungsten with alloy metals) is currently sold at retail at 9000 rubles per kilogram.

        Tungsten carbide powder is sold in bulk at 5350 rubles per kilogram.

        Tell me the address where they offer 100 re per kg - haaaroshiy gesheft looms (even with two-way dumping) laughing
        1. bunta
          bunta 5 March 2018 21: 26

          Looking to which end.
          1. Operator
            Operator 5 March 2018 22: 01
            You are like the first day in domestic business - it’s written: "from hundred rubles " laughing
            1. bunta
              bunta 5 March 2018 22: 11
              What difference does it make if the cores are made not of tungsten carbide itself, but of hard alloy VK8, VK12 where cobalt is included in addition to HF. Wholesale price for 1000 alloy r / kg. That at an expense on the core 1,8 gr is 1,8 rubles per bullet.
              1. Operator
                Operator 5 March 2018 22: 27
                The wholesale price of cobalt is 2400 rub / kg, therefore, at the price of tungsten carbide 5350 rub / kg, the price for the alloy of these metals does not dance at the level of 1000 rub / kg.

                Once again - 1 kg of tungsten fraction costs 9000 rubles, everything else from the evil one

                In the series, one gram of the weight of a tungsten carbide core will cost about 5 rubles - a quite reasonable price for breaking through an ESAPI armored plate.

                But actually it’s not about the core material, but about the flaws in the Stiletto bullet design - blocking of the head of the core with brass and the presence of parasitic lead that does not participate in breaking through the armor after breaking from the core (at 1 / 3 penetration depth, however).

                Outskirts, as always, did not finish laughing
                1. bunta
                  bunta 5 March 2018 23: 07
                  Quote: Operator

                  This is at the wholesaler. From the factory, it will be around 1000. But not 3000.

                  As for the design of the bullet, I did not find any drawings or descriptions on the stylet website. There is only a mention of the tungsten carbide core and that’s it. Whether lead is there or not is unknown. There is no lead in the M855A1 pool either. There is a tin alloy. It’s not clear where in the article 5,45 came from.
                  1. Operator
                    Operator 5 March 2018 23: 44
                    Quote: bunta
                    As for the design of the bullet, I did not find any drawings or descriptions on the stylet website. Whether lead is there or not is unknown. There is no lead in the M855A1 pool either. There is a tin alloy.

                    The article in question is an abridged version of the article on the Ukrainian news site, where there is mention of a lead glass, where the cermet core is inserted. In the photo in the article on VO, lead glasses are also visible assembled with cores - the second item to the left of each cartridge.

                    A lead glass acts as a shirt, preventing the rifling of the steel barrel from contacting the carbide core.

                    The Americans in the M855A1 pool did otherwise - they thickened the brass half-shell, which at the same time became a glass. By the way, in this pool behind the steel armor-piercing tip is an alloy based on bismuth, not tin.

                    An attempt to implement such a solution in the Stiletto pool will lead to a deterioration in the ballistic coefficient - it (unlike the M855A1) has a non-aerodynamic head part.
  12. Vvp
    Vvp 6 March 2018 03: 13
    Stiletto Dummy
    96 / officers
  13. emwave
    emwave 11 March 2018 13: 14
    In light of the foregoing, Russia and China must impose an embargo on the supply of tungsten to these gentlemen.
    Reserves at tungsten deposits in 2012, thousand tons *
    China 1,900.0
    Russia 250.0
    Canada 120.0
    Bolivia 53.0
    Austria 10.0
    Other countries 867.0
    Total reserves 3,200.0
    * US Geological Survey data
  14. Herosw
    Herosw 24 January 2020 23: 15
    This is research, such crap. Why didn’t they give an example, these bullets with the same cores that we invented, even before 2 MV, such as BS-40 and BS-41. This type of bullet was made for 5,45 BS in 2002.