The 5.45×39mm PSP cartridge is a rimless bottlenecked intermediate cartridge. It was introduced into service in 2005 together with ADS amphibious rifle by Russia. This special cartridge was made for underwater use in ADS rifle and based on standard 5.45×39mm.

5.45×39mm PSP
5.45×39mm PSP cartridge
TypeRifle
Place of originRussia
Service history
In service2005–present
Used byRussian Federation
Production history
DesignerKBP Instrument Design Bureau
Designed2005
Specifications
Case typeSteel, rimless, bottleneck
Bullet diameter5.60 mm (0.220 in)
Neck diameter6.29 mm (0.248 in)
Shoulder diameter9.25 mm (0.364 in)
Base diameter10.00 mm (0.394 in)
Rim diameter10.00 mm (0.394 in)
Rim thickness1.50 mm (0.059 in)
Case length39.82 mm (1.568 in)
Overall length57.00 mm (2.244 in)
Case capacity1.74 cm3 (26.9 gr H2O)
Rifling twist255 mm (1 in 10 inch) or
200 mm (1 in 7.87 inch)
Primer typeBerdan
Maximum pressure380.00 MPa (55,114 psi)
Ballistic performance
Bullet mass/type Velocity Energy
16.4 g (253 gr) PSP Tungsten bullet 333 m/s (1,090 ft/s) 909 J (670 ft⋅lbf)
14.5 g (224 gr) PSP-UD Bronze bullet 430 m/s (1,400 ft/s) 1,340 J (990 ft⋅lbf)
Test barrel length: 418 mm (16.5 in) ADS amphibious rifle

There are two variants of it. PSP with heavy 16.4g tungsten alloy bullet and PSP-UD with 14.5g bronze bullet.[1][2]

References

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  1. ^ Соловцов Е.В. "Российские боеприпасы Промежуточные патроны" (PDF) (in Russian). Retrieved 2019-02-13.
  2. ^ "ADS dual medium". Modern Firearms. 2010-10-27. Retrieved 2019-02-13.

See also

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List of rifle cartridges

ADS Rifle