Lindcott Armory Rifle
7mm Dakota
A short-magnum 7mm from Dakota Arms built on the .404 Jeffery-derived case family, wringing magnum velocity out of a standard-length action..
- Caliber
- 0.284″ · 7.214 mm
- Introduced
- 1992
- Case
- Bottleneck
- Parent
- .404 Jeffery
- Status
- Discontinued
- Introduced
- 1992
- Type
- Rifle
- Status
- Discontinued
- Availability
- Rare
- Primer
- Large Rifle Magnum
- Eff. range
- 700 yd
Ballistics
- Parent case
- .404 Jeffery
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.
reloading data · verified| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 7.21 | 0.284 | ✓ |
| Neck ⌀ | 7.98 | 0.314 | ✓ |
| Shoulder ⌀ | 13.49 | 0.531 | ✓ |
| Shoulder angle | 30° | — | ✓ |
| Base ⌀ | 13.84 | 0.545 | ✓ |
| Rim ⌀ | 13.84 | 0.545 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.27 | 0.050 | ~ |
| Neck length | 8.46 | 0.333 | ≈ |
| Case length | 63.50 | 2.500 | ✓ |
| Overall length | 84.58 | 3.330 | ✓ |
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 Dakota 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
A short-magnum 7mm from Dakota Arms built on the .404 Jeffery-derived case family, wringing magnum velocity out of a standard-length action.
FAQs
- What bullet diameter is 7mm Dakota?
- 7mm Dakota uses a 0.284″ (7.214 mm) diameter bullet.
- Is 7mm Dakota still in production?
- 7mm Dakota is discontinued; typical availability is rare.
- What is 7mm Dakota based on?
- 7mm Dakota is derived from the .404 Jeffery case.
Sources & provenance
- ManufacturerHornady — Hornady Obsolete Load Data — 7mm Dakota (rifle) · bullet ⌀, grain weights, velocity, parent_cartridgearchived
- ReferenceGun Digest Books — Cartridges of the World (Barnes/Woodard) — '7mm Dakota' entry · year
- SecondaryBallistic Studies (Nathan Foster) — Dakota Proprietary Cartridges · velocity, grain weights, parent_cartridgearchived
- SecondaryCartridge Collector — 7mm Dakota · parent_cartridge
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →