Rifle · CIP

8x75mmRS

8x75 RS8x75mm RS

German semi-rimmed sporting cartridge for double and combination guns; a lengthened 8x57mm designed for German express-style guns requiring a semi-rimmed case..

Caliber
0.3236″ · 8.22 mm
Introduced
1922
Case
Semi-Rimmed
Status
Active
Velocity2,713–2,791 fps
Energy3,056–3,234 ft·lb · est.
Identity
Introduced
1922
Type
Rifle
Origin
Germany
Inventor
Various German commercial
Standard
CIP
Status
Active
Availability
Rare
Build
Primer
Boxer Large Rifle
Case type
Semi-Rimmed
Pressure & range
Max pressure
55,114 psi
Eff. range
300 yd

Ballistics

Representative trajectory · 100 yd zero0–800 yd
100 yd · zero0″−125″125″ drop @ 800 yd0400800Open in Ballistic Compare ↗
Parent case

Representative trajectory — modeled from a single velocity input (no published BC for this cartridge yet).

Dimensionscase measurements · scale drawing · size vs familiar rounds

Case dimensions — the scale drawing at the top of the page is built from these.

CIP TDCC · verified
Measuremmin
Bullet ⌀8.220.324
Neck ⌀9.080.357
Shoulder ⌀10.400.409
Shoulder angle13°
Base ⌀11.900.469
Rim ⌀13.350.526
Belt ⌀n/a
Rim thickness1.400.055
Neck length5.540.218
Case length74.602.937
Overall length96.003.780

Size vs familiar rounds

Drawn at true 1:1 — every case is accurate relative to the others. Absolute size depends on your screen's pixel density, so measuring one against a real ruler may be off. 8x75mmRS is highlighted below.

Reloading costestimate cost per round vs factory

Estimate your cost per round and how it compares to factory. Inputs are yours — nothing is stored.

Cost estimate only — not load data. Charge weight is your input; follow published manuals for safe charges.

Connected reference

History

Developed in 1922 as a semi-rimmed 8mm cartridge for German break-open double rifles and combination guns that require a rim for reliable headspacing. The 8x75RS offers more powder capacity than the 8x57mm IS and is still CIP-standardized, produced by RWS and used in high-grade German double rifles.

FAQs

What bullet diameter is 8x75mmRS?
8x75mmRS uses a 0.3236″ (8.22 mm) diameter bullet.
Is 8x75mmRS still in production?
8x75mmRS is active; typical availability is rare.

Sources & provenance

Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →