.375 Swiss P Load Data & Reloading Guide

Rifle

Also known as: .375 Swiss Pistol, 9.5×40mm Swiss, 9.5mm Swiss

About .375 Swiss P

The .375 Swiss P is a relatively modern cartridge that originated in Switzerland, designed for long-range precision and versatile use. It was developed to bridge the gap between traditional hunting cartridges and high-performance tactical calibers, providing excellent ballistic performance while maintaining accuracy and energy retention. This cartridge is part of the Swiss P line, renowned for its innovation and technological advancement in ammunition design.

Technically, the .375 Swiss P features a case length designed to optimize powder capacity, promoting sustained velocity and reduced trajectory drop over long distances. The caliber typically utilizes bullets with diameters around .375 inches, with weights often ranging from 300 to 350 grains. This substantial bullet weight, combined with balanced cartridge design, provides superior sectional density and impressive ballistic coefficients, enhancing long-range accuracy and down-range energy transfer.

The ballistic performance of the .375 Swiss P is notably high, with muzzle velocities often exceeding 2500 feet per second, depending on the specific loading and bullet choice. This high velocity contributes to its flat trajectory and extended range, making it an appealing choice for competitive marksmen and hunters pursuing large game at distance. The cartridge excels in delivering consistent performance, particularly in challenging environmental conditions, providing reliability for precision shooters.

For reloaders, the .375 Swiss P offers several advantages. The cartridge's design allows for a wide range of bullet and powder combinations, enabling customization to suit specific needs or preferences. Reloaders will appreciate the quality of brass and the potential for producing highly tailored loads that optimize performance for specific applications, whether for competitive shooting, long-range hunting, or tactical uses. Its versatility and the ability to adapt loads to various scenarios make it a popular choice among those who seek precision and reliability in reloaded ammunition.

Technical Drawing

.375 Swiss P cartridge dimensions, C.I.P.L1 = 57.43 mm, L2 = 61.85 mm, L3 = 69.85 mm, L6 = 93.5 mmL1 = 57.43 mmL2 = 61.85 mmL3 = 69.85 mmL6 = 93.50 mm54.0°

Based on C.I.P., the max. allowed case length is 2.750 in / 69.85 mm, the max. cartridge length is 3.681 in / 93.50 mm, and the max. allowed pressure is 60,916 PSI / 4,200 bar.

Technical Specifications

Maximum Pressure:60916 PSI / 4200 bar
Case Volume:125 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Safety Standard:C.I.P. (Datasheet)
Bore Area:70.16 mm²
Barrel Diameter:0.375" / 9.5 mm
L1:2.261" / 57.43 mm
L2:2.435" / 61.85 mm
L3:2.750" / 69.85 mm
L6:3.681" / 93.50 mm

Start Calculating to Develop your own Load Data for .375 Swiss P

Use our professional ballistics calculator to develop safe and accurate load recipes for .375 Swiss P.

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Standard Load Data — .375 Swiss P

Select your desired cartridge and bullet weight below to access the corresponding load table. From there, you can choose any listed load recipe and transfer it directly into the ballistics calculator for further refinement, optimization, and precision tuning.

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Community Loads — .375 Swiss P

Here are some popular loads for .375 Swiss P:

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BulletPowderBarrel (in)Charge (gr)Case Volume (GoW)OAL (in)Max. Pressure (psi)Muzzle Velocity (fps)
M.375 | 260gr | Nosler Expansion Tip (260gr)
Hodgdo
Superformance
25.6105.0125.03.6357,233 (94%)3005
M.375 | 260gr | Nosler Expansion Tip (260gr)
Hodgdo
Superformance
25.6107.0125.03.8354,842 (90%)2986
M.375 | 350gr | Sierra HPBT MatchKinging (350gr)
Vihtav
N550
26.2••.•125.03.9156,550 (93%)2546
M.375 | 350gr | Sierra HPBT MatchKinging (350gr)
Vihtav
N550
26.2••.•125.03.9156,289 (92%)2543
M.375 | 350gr | Sierra HPBT MatchKinging (350gr)
Vihtav
N550
26.2••.•125.03.6357,812 (95%)2526
M.375 | 350gr | Sierra HPBT MatchKinging (350gr)
Vihtav
N550
26.2••.•125.03.9154,853 (90%)2523
M.375 | 350gr | Sierra HPBT MatchKinging (350gr)
Reload
RS 62
25.6••.•125.03.6857,406 (94%)2507
M.375 | 350gr | Sierra HPBT MatchKinging (350gr)
Vihtav
N550
26.2••.•125.03.6355,274 (91%)2503
.375 | 350gr | Sierra HPBT MatchKinging (350gr)
Vihtav
N550
26.2••.•125.03.9148,486 (80%)2434
.375 | 350gr | Sierra HPBT MatchKinging (350gr)
Vihtav
N550
26.285.0125.03.6753,722 (88%)2490

Frequently Asked Questions

The maximum pressure for .375 Swiss P is 60,916 psi | 4,200 bar.

.375 Swiss P typically uses a Large Rifle Magnum (LRM) primer.

The case capacity of .375 Swiss P is approximately 125 grains of water (H₂O).