BMP-3 armament: caliber, nomenclature and tactical capabilities

Third generation infantry fighting vehicle known as BMP-3, is deservedly considered one of the most powerful cars in its class all over the world. The uniqueness of this platform lies not only in its high buoyancy and excellent mobility, but also in the unprecedented firepower that it is capable of deploying on the battlefield. The main advantage of the Soviet and then Russian engineering school was the concept of an “infantry tank”, where the fire capabilities are comparable to light tanks.

The main feature that immediately catches your eye when analyzing the technical characteristics is the caliber of the main gun. Unlike their Western counterparts, where 25-mm or 30-mm cannons have long become the standard, Kurgan engineers relied on a large caliber. Armament of the BMP-3 built according to the 2K23 scheme, which combines a 100 mm caliber gun and a coaxial automatic cannon. This solution allows you to effectively hit both lightly armored enemy vehicles and manpower located in shelters.

You need to understand that it is the combination of different types of weapons that makes this vehicle a universal combat tool. The ability to fire high-explosive fragmentation shells over areas and armor-piercing sub-caliber ammunition at point targets provides a tactical advantage. Next, we will analyze in detail each element of the fire system, consider ballistics and discuss why this particular caliber was chosen by the designers.

⚠️ Attention: When working with technical documentation or studying performance characteristics, remember that actual combat characteristics may differ from those declared depending on the type of ammunition used and terrain conditions.

Architecture of combat module 2K23

The heart of the vehicle's firepower is the stabilized combat module 2K23, displaced relative to the axis of symmetry of the body. This arrangement made it possible to place the landing compartment in the rear part, while maintaining the ability to fire on the move. The guidance system includes day and night sights, which ensures effective combat use at any time of the day and in any weather.

The basis of the complex is the 100-mm 2A70 gun, which is structurally designed as a low-pressure barrel. This weapon is capable of firing not only traditional projectiles, but also launching guided missiles. To his right is a rigidly twin 30mm automatic cannon. 2A72, designed to combat air targets and lightly armored objects. The third element is a coaxial 7.62 mm machine gun, which is used to suppress manpower at distances of up to 2000 meters.

The uniqueness of the system lies in the ability to select the type of weapon to hit a target. The operator can switch between gun, gun and missile system almost instantly. This requires highly qualified crew, since the ballistics of a 100-mm projectile and a 30-mm track are significantly different.

100-mm gun 2A70: caliber and ballistics

The central element that defines the class of the vehicle is the 100 mm rifled gun. The 100 mm caliber was not chosen by chance: it is optimal for hitting most modern light armored targets, including infantry fighting vehicles, armored personnel carriers and lightly armored reconnaissance vehicles of a potential enemy. The 2A70 gun has a barrel length that provides an initial projectile velocity sufficient to penetrate homogeneous armor steel up to 600 mm thick at a distance of 2000 meters when using cumulative projectiles.

The most important characteristic is the ability to fire 9M117 Arkan and 9M117M Arkan-M guided missiles. These ammunition can engage targets at a distance of up to 5,500 meters, which puts the vehicle beyond the effective fire range of most light armored vehicles. Ballistics The missile allows you to hit targets behind cover using a trajectory with a high aiming point.

The gunner-operator uses a stabilized sight for aiming, which automatically makes corrections for deflection and wind speed. However, it is worth considering that a rifled barrel has its own resource, after which the accuracy of the battle decreases. To compensate for this effect, the fire control system provides correction tables.

Automatic gun 2A72 and auxiliary weapons

The twin 30 mm 2A72 cannon is a modernized version of the 2A42 cannon, known from the BMP-2. The main difference is the lightweight design of the bolt and a modified cartridge supply pattern, which made it possible to reduce the weight of the entire combat module. The 30 mm caliber is considered the “gold standard” for combating lightly armored targets and helicopters at low altitudes.

The gun has two firing modes: single shots and bursts. The rate of fire can vary from 200 to 800 rounds per minute, which allows for efficient use of ammunition depending on the tactical situation. Ammunition The guns are placed in two belts, which makes it possible to load the belt with armor-piercing tracer shells, and the second with fragmentation incendiary shells.

Additionally, the vehicle is equipped with three 7.62 mm machine guns. One of them is paired with the main gun, the second is installed in the frontal plate of the hull and is controlled by the driver, and the third is a course gun, located to the right of the driver. This number of machine guns provides all-round defense and the ability to fire without turning the vehicle's body.

Nomenclature and types of ammunition

The effectiveness of any weapon directly depends on the available range of ammunition. A wide range of shells has been developed for the 100-mm BMP-3 gun, allowing it to solve any fire mission. The ammunition is based on unitary shots with a cartridge case, which simplifies the loading process and increases the rate of fire.

The 30mm cannon also has a varied range of cartridges, including armor-piercing tungsten-core sabot rounds. These ammunition are capable of penetrating the armor of modern Western infantry fighting vehicles, such as M2 Bradley or Marder, at real combat distances. Particular attention should be paid to self-destructing incendiary fragmentation shells, which are safe when dropped near friendly troops.

It is worth noting that the range is constantly updated. The emergence of new types of missiles with a tandem warhead makes it possible to overcome the dynamic protection that heavier targets may be equipped with. It is the ability to launch an ATGM through the barrel of a 100-mm gun that is a unique feature that distinguishes the BMP-3 from the vast majority of its analogues.

Fire control system and sighting systems

Hitting the target on the move and with the first shot is impossible without a modern fire control system (FCS). The BMP-3 has a complex installed 1K13-2, which provides automatic target tracking and calculation of the required elevation angles. The gunner sees the target through an optical-electronic channel that can operate in the infrared range.

An important element is the laser rangefinder built into the sighting system. It allows you to instantly determine the distance to the target with high accuracy, eliminating visual assessment errors. The distance data is automatically entered into the ballistic computer, which also takes into account air temperature, pressure and bore wear.

⚠️ Attention: The effectiveness of the control system directly depends on the technical condition of the gyroscopic stabilizers. Any vibrations or shocks during transportation may disrupt the settings, requiring the weapon to be re-zeroed.

Tactical Applications and Firepower

In modern combat conditions, the BMP-3 often acts as light fire support. High mobility allows the vehicle to quickly change firing positions, evading enemy return fire. The ability to fire afloat makes it indispensable when crossing water obstacles on the move, ensuring the suppression of coastal fortifications.

Using a 100 mm gun allows you to destroy fortifications and bunkers that a 30 mm gun cannot handle. At the same time, the rapid-fire cannon is effective against drones and helicopters. This flexibility makes the vehicle a dangerous opponent for both infantry and armored vehicles.

However, it is necessary to remember about the vulnerability of the vehicle when hit by heavy anti-tank weapons. Therefore, application tactics are often based on the “shoot and move” principle. The instantaneous power of the volley must be used to inflict maximum damage before the enemy discovers the position.

Comparison with analogues and development prospects

If we compare the BMP-3 with Western analogues, such as the German Puma or American Bradley, then the Russian car wins due to its caliber. Western designs rely on a highly accurate 30mm or 40mm cannon with large ammunition loads, but they lack the ability to launch heavy missiles through the cannon barrel. This creates a niche where the BMP-3 dominates.

Prospects for the development of weapons are associated with the introduction of new programmable detonation ammunition. Such shells can explode at a given distance in front of the target, damaging manpower with fragments even behind cover. Work is also underway to integrate more advanced thermal imaging targeting channels.

Upgrade to level BMP-3M includes the installation of a new combat module "Bakhcha-U", which further increases the effectiveness of fire. Increasing the declination angles of the gun makes it possible to fire in mountainous areas and in urban environments, hitting targets on the upper floors of buildings or on the reverse slopes of heights.

Frequently asked questions (FAQ)