Rifle · CIP
7mm KM
7mm KM is a rimless bottlenecked rifle cartridge of Germany origin.
- Caliber
- 0.2846″ · 7.23 mm
- Introduced
- 1989
- Case
- Rimless
- Parent
- .338 Lapua Magnum
- Primary use
- Hunting
- Status
- Active
- Introduced
- 1989
- Type
- Rifle
- Origin
- Germany
- Inventor
- Wolfgang Katzmaier
- Manufacturer
- Wolf
- Standard
- CIP
- Status
- Active
- Availability
- Limited
- Case capacity
- 110.5 gr H₂O
- Twist (typical)
- 1:8.5
- Primer
- Large Rifle Magnum
- Case type
- Rimless
- Max pressure
- 63,817 psi, CIP transducer
- Eff. range
- 400 yd
- Max range
- 2000 yd
- Recoil
- 28.7–32.3 ft·lb
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for 7mm KM, 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
- .338 Lapua Magnum
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| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 7.23 | 0.285 | ✓ |
| Neck ⌀ | 8.14 | 0.320 | ✓ |
| Shoulder ⌀ | 13.82 | 0.544 | ✓ |
| Shoulder angle | 26° | — | ≈ |
| Base ⌀ | 14.91 | 0.587 | ✓ |
| Rim ⌀ | 14.93 | 0.588 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.52 | 0.060 | ✓ |
| Neck length | 8.48 | 0.334 | ≈ |
| Case length | 69.20 | 2.724 | ✓ |
| Overall length | 93.50 | 3.681 | ✓ |
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. 7mm KM 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.
Lineage
Connected reference
History
The 7mm KM is a bottleneck rimless rifle cartridge originating in Germany.
FAQs
- What twist rate does 7mm KM use?
- 7mm KM typically uses a 1:8.5 twist rate.
- What bullet diameter is 7mm KM?
- 7mm KM uses a 0.2846″ (7.23 mm) diameter bullet.
- Is 7mm KM still in production?
- 7mm KM is active; typical availability is limited.
- What is 7mm KM used for?
- 7mm KM is primarily used for hunting.
- What is 7mm KM based on?
- 7mm KM is derived from the .338 Lapua Magnum case.
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 →
