The Russians also make some super overpressure stuff
Specifically super over pressure armor piercing stuff
| | |
Cartridge weight | 9.5 g (147 gr) | 8.1 g (125 gr) |
Bullet weight | 5.2 g (80.2 gr) | 4.1 g (63.3 gr) |
Muzzle velocity | 460 m/s (1,509 ft/s) | 600 m/s (1,969 ft/s) |
Muzzle energy | 561 J (414 ft⋅lbf) | 756 J (558 ft⋅lbf) |
Accuracy of fire at
25 m (27 yd) (R50) | 25 mm (1.0 in) | |
Maximum pressure | 280 MPa (41,000 psi) | |
The 7N21 (
Cyrillic: 7
Н21) 9×19mm overpressure variant features an armor-piercing bullet and generates a peak pressure of 280 MPa (41,000 psi). The 7N21 bullet features a hardened (subcaliber) steel penetrator core, enclosed by a bimetal jacket. The space between the core and jacket is filled with polyethylene, and the tip of the penetrator is exposed at the front of the bullet, to achieve better penetration. The penetration range for body armor is specified at up to 40 m (130 ft). The
MP-443 Grach and
GSh-18 pistols and
PP-19 Vityaz,
PP-90M1 and
PP-2000 submachine guns were designed for use with this overpressure cartridge.
Jane's Infantry Weapons stated in 2003 that the 7N21 cartridge combines the 9×19mm Parabellum dimensions with a
9×21mm Gyurza bullet design and was developed specifically for the penetration of body armor and for the MP-443 Grach pistol, the latest Russian service pistol.
The 7N31 (
Cyrillic: 7
Н31) / PBP 9×19mm overpressure variant uses the same concept with a similar but lighter bullet that achieves higher muzzle velocity. The penetration of an 8 mm (0.31 in)-thick St3 steel plate is specified at up to 10 m (33 ft). The 7N31 cartridge was developed in the late 1990s for the
GSh-18 pistol. The 7N31 was adopted for the PP-90M1 and PP-2000 submachine guns. Its maximum service pressure remains unclear.
The method of construction of the two rounds allows them to be effective against both unarmored and armored targets. If the bullet strikes an unarmored target, it holds together to produce a wide wound channel. If the bullet strikes an armored target, the sleeve is stripped away and the core penetrates alone. The disadvantage of the rounds is that high impact velocities are needed for them to work effectively, so the bullets are relatively light to maximize their muzzle velocity. This means they lose velocity relatively quickly, limiting their effective range
but no clue if the ukies ever got any.
I have no knowledge as to whether or not the Ukrainians have any or have developed their own domestic clone of (Like they apparently have done with the 12.7x55 mm cartridge, similar overall cartridge slightly different dimensions) either 7N21 or 7N31 but I have heard from a Russian acquaintance of mine that allegedly some time during the war in Donbass that some thin skinned armored vehicles got some holes poked in them by those rounds but that is probably not true.
Why do faggots use terms like "liberate" to mean "annexed"? Do you think everyone around you is stupid & will assume the Ukrainians are being freed from some implied slavery or is it meant to be sarcastic?
The Ukranians have been liberated from the Iron Grip of a fake gay country.