5.7x28mm vs 7.62x25mm armor piercing

When comparing the 5.7x28mm and 7.62x25mm cartridges for armor-piercing capabilities, there are a few key factors to consider:

- Origin: The 5.7x28mm cartridge was developed by FN Herstal and introduced in the early 1990s. It was specifically designed for the FN P90 submachine gun and the FN Five-seveN pistol.
- Armor-Piercing Capability: The 5.7x28mm cartridge is known for its armor-piercing capabilities, especially when using specialized ammunition like the SS190 AP (Armor-Piercing) round. The SS190 features a steel penetrator core and can penetrate certain types of body armor, including soft armor and some level IIIA ballistic vests. However, its effectiveness against harder armor materials or higher-level ballistic protection can be limited.
- Ballistics: The 5.7x28mm cartridge typically fires lightweight, high-velocity bullets in the range of 28 to 40 grains. It achieves high muzzle velocities, which contribute to its armor-piercing capability.

- Origin: The 7.62x25mm cartridge was developed by the Soviet Union in the early 1930s for use in the Tokarev TT-33 pistol and later adopted for the PPSh-41 submachine gun.
- Armor-Piercing Capability: The 7.62x25mm cartridge, particularly with specialized armor-piercing rounds like the Tokarev TT AP, can exhibit good armor-piercing performance against soft body armor and some light materials. However, its effectiveness against modern, higher-level ballistic protection can be limited.
- Ballistics: The 7.62x25mm cartridge typically fires a 85 to 90-grain bullet at high velocities, resulting in flat trajectories and good penetration potential.

In summary, both the 5.7x28mm and 7.62x25mm cartridges have some armor-piercing capabilities, particularly against lower-level ballistic protection. However, it's important to note that advancements in body armor technology have led to the development of more effective protective materials, which can challenge the armor-piercing capabilities of these cartridges.

When considering armor-piercing requirements, it's essential to consult with ballistic experts, follow applicable laws and regulations, and consider the specific threat environment. Additionally, it's important to note that the use of armor-piercing ammunition may be restricted or prohibited in certain jurisdictions, so compliance with local laws is crucial.

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