12.7×55mm STs-130
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12.7×55mm | ||||||||||||||||||||||||
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Russian Federation | ||||||||||||||||||||||||
Production history | ||||||||||||||||||||||||
Designed | 2002 | |||||||||||||||||||||||
Specifications | ||||||||||||||||||||||||
Parent case | .338 Lapua Magnum | |||||||||||||||||||||||
Bullet diameter | 13.01 mm (0.512 in) | |||||||||||||||||||||||
Shoulder diameter | 13.76 mm (0.542 in) | |||||||||||||||||||||||
Base diameter | 14.86 mm (0.585 in) | |||||||||||||||||||||||
Case length | 54.91 mm (2.162 in) | |||||||||||||||||||||||
Overall length | 97.3 mm (3.83 in) | |||||||||||||||||||||||
Ballistic performance | ||||||||||||||||||||||||
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The 12.7×55mm
MOA
at 100 metres (110 yd) up to the effective range limit of 600 metres (660 yd).
Despite being chambered in the same cartridge, the ShAK-12 (and RSh-12) would not be able to feed or chamber rounds designed for the VKS due to significant length differences in the bullet component of the cartridge and thus requires its own, shorter, loads. The ShAK-12 rounds have less range compared to the VKS with the maximum effective range of the loads reaching in between 100 and 300 metres (110 and 330 yd).[1]
Cartridge variants for use in the VKS
- STs-130 (СЦ-130) - standard
- STs-130U (СЦ-130У) - for training
- STs-130PT (СЦ-130ПТ) - increased accuracy (59 gram bullet)
- STs-130PT2 (СЦ-130ПТ2) - increased accuracy (solid bronze bullet)
- STs-130VPS (СЦ-130ВПС) - increased penetration (76 gram bullet)
Cartridge variants for use in the ShAK-12 assault rifle
This section is missing information about overall length for use in ShAK-12 (looks like no more than 65 mm).(November 2021) |
- Legkaya Pulya (LP) or "Light Bullet" - Light supersonic lead bullet with an aluminum core weighing 7 grams (108 grains).
- Tyazhelaya Pulya (TP) or "Heavy Bullet" - Heavy subsonic lead bullet weighing 33 grams (509 grains).
- Dvukhpul'niy (DP) or "Double-Bulleted" - Two bullets loaded inline weighing 17 grams (262 grains) each.
- Broneboynaya Pulya (BP) or "Armor-Piercing Bullet" - Lead bullet with an armor-piercing component weighing nearly 18 grams (277 grains).[1]
See also
- Thumper concept
- Whisper (cartridge family)
- List of AR platform cartridges
- List of rifle cartridges
- 12 mm caliber
- 8.6 Blackout
- .375 SOCOM
- .45-70 Government
- .45 Raptor
- .450 Bushmaster
- .458 SOCOM
- .458 Winchester Magnum
- .50 Beowulf
- .50 Alaskan
- .510 Whisper
References
- ^ a b "ASh-12.7". Modern Firearms. 2011-12-05. Retrieved 2024-02-23.