Английская Википедия:.375 Swiss P
Шаблон:Short description Шаблон:Infobox firearm cartridge
The .375 Swiss P or 9.5×70mm, designated 375 Swiss P by the C.I.P., is a rebated rim, bottleneck, centerfire rifle cartridge. It was developed during the late 2010s as a high-powered, long-range cartridge for military snipers and the law enforcement sector.[1] The loaded cartridge is Шаблон:Convert in diameter (rim) and Шаблон:Convert long. It can penetrate better-than-standard military body armor and has a maximum supersonic range of about Шаблон:Convert with C.I.P. conform FMJ factory ammunition at sea level conditions. Muzzle velocity is dependent on barrel length, seating depth, and powder charge, and varies from Шаблон:Convert for commercial loads with Шаблон:Convert bullets, which corresponds to about Шаблон:Convert of muzzle energy. [2]
Background
The .375 Swiss P is advertised by RUAG Ammotec as a cartridge that "fills the gap in ballistic performance between the .338 Lapua Magnum (8.6×70mm) and the .50 Browning Machine Gun (12.7×99mm)". Especially in regard to down-range kinetic energy, this performance gap is significant. As such it was designed to be relatively easily (re)chambered by just a rebarreling as a performance upgrade in sturdily built rifles originally designed around the .338 Lapua Magnum that also are encountered in .338 Norma Magnum and .300 Norma Magnum chamberings.
The .375 Swiss P shares its bolt face, rim diameter and overall length and maximum operating pressure with the .338 Lapua Magnum chambering. It features a larger Шаблон:Convert base diameter as found in the .500 Jeffery. This results in a (P1 - R1 = Шаблон:Convert) rebated rim.[1] Rebated rim cartridges have a rim that is significantly smaller in diameter than the base of the case, serving only for extraction. Functionally the same as a rimless case, a rebated rim allows a gun to be easily converted to fire a larger-than-normal case capacity cartridge, as most of a gun's action (loading/extraction mechanism) does not need to be altered as long as the rim size is preserved.[3][4]
Currently, the PGM Mini Hecate II, Voere with the X3, X4 and X5 and Unique Alpine with the TPG-3A4 (FN Ballista) offer the new chambering, and the TTS Xceed is also to be available in .375 Swiss P. At its introduction in 2021 .375 Swiss P ammunition is only available for military/law enforcement users.[4]
Performance
RUAG Ammotec claims that the .375 Swiss P FMJ low drag projectile load offers performance superior to their .338 Lapua Magnum offerings, exhibiting additional supersonic range and reduced wind drift, while delivering greater kinetic energy down range.[5][6] The manufacturer states .375 Swiss P ball is loaded with a double base smokeless powder and the projectile has a 0.8014 (ICAO) G1 ballistic coefficient under International Standard Atmosphere sea level conditions (air density ρ = 1.225 kg/m3).[7] With an AP-type projectile the .375 Swiss P is claimed to be able to penetrate the body armour of German Protection Level IV from a distance at ranges up to Шаблон:Convert. However, as of May 2021 .375 Swiss P AP loads are not commercially available.[4]
See also
Notes
References
External links
- C.I.P. TDCC sheet 375 SWISS P
- .375 SWISS P Ball
- .375 SWISS P Ball Fact Sheet
- .375 SWISS P Fact Sheet Brochure
