Rifle · Military · Not SAAMI standardized · Not standardizedObsolete
7.62x41mm M43 Experimental
Developmental Soviet intermediate cartridge immediately preceding the final 7.62x39mm case length..
- Caliber
- 0.311″ · 7.9 mm
- Introduced
- 1943
- Case
- Rimless
- Parent
- 7.35x51mm Carcano
- Primary use
- Experimental, Military
- Status
- Obsolete
- Obsolete
- Obsolete
- Introduced
- 1943
- Type
- Rifle
- Origin
- Soviet Union
- Inventor
- Nikolay Elizarov, Boris Semin
- Manufacturer
- Soviet Union state arsenals
- Standard
- Military · Not SAAMI standardized · Not standardized
- SAAMI
- Not SAAMI standardized
- Obsolete
- Obsolete
- Status
- Obsolete
- Availability
- Collector
- Case capacity
- 37.3 gr H₂O
- Twist (typical)
- 1:10
- Primer
- Large Rifle
- Case type
- Rimless
- Max pressure
- 45,000 psi, CIP transducer
- Eff. range
- 400 yd
- Max range
- 3350 yd
- Recoil
- 10–17 ft·lb
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for 7.62x41mm M43 Experimental, so this is the shape gravity alone gives the advertised velocity. Drag would steepen it. The tool below solves real loads through their published G1 or G7 model.
Open in Ballistic Compare- Parent case
- 7.35x51mm Carcano
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.
Wikipedia · approximate| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 7.90 | 0.311 | ~ |
| Neck ⌀ | 8.60 | 0.339 | |
| Shoulder ⌀ | 10.07 | 0.396 | |
| Shoulder angle | 23° | — | |
| Base ⌀ | 11.35 | 0.447 | |
| Rim ⌀ | 11.35 | 0.447 | |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.43 | 0.056 | |
| Neck length | 8.15 | 0.321 | |
| Case length | 41.00 | 1.614 | ~ |
| Overall length | 54.61 | 2.150 | |
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. 7.62x41mm M43 Experimental is highlighted below.
Missing a dimension for 7.62x41mm M43 Experimental? Some case measurements aren't in a published SAAMI/CIP drawing yet. Have a factory or reamer print? Send it → — verified hard-to-find data earns a free Lindcott sticker.
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.
Lineage
Connected reference
History
The original 41 mm case was shortened to 39 mm during development (standardized 1947); closes a broken parent reference in the DB.
FAQs
- What twist rate does 7.62x41mm M43 Experimental use?
- 7.62x41mm M43 Experimental typically uses a 1:10 twist rate.
- What bullet diameter is 7.62x41mm M43 Experimental?
- 7.62x41mm M43 Experimental uses a 0.311″ (7.9 mm) diameter bullet.
- Is 7.62x41mm M43 Experimental still in production?
- 7.62x41mm M43 Experimental is obsolete; typical availability is collector.
- What is 7.62x41mm M43 Experimental used for?
- 7.62x41mm M43 Experimental is primarily used for experimental, military.
- What is 7.62x41mm M43 Experimental based on?
- 7.62x41mm M43 Experimental is derived from the 7.35x51mm Carcano case.
Sources & provenance
- Secondary CartridgeCollector.net — 7.62 x 41 M43 — Pre-AK Experimental · year archived
- Secondary FirearmCentral Wiki — 1943-1947 Soviet Weapon Trials (7.62x41mm M43) · bullet ⌀
- Secondary The Firearm Blog (Nathaniel F.) — Modern Intermediate Calibers 002: The Soviet 7.62x39mm · velocity archived
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →
