Lindcott Armory Rifle · SAAMI
.400 Legend
Winchester's straight-wall hunting cartridge positioned above .350 Legend.
- Caliber
- 0.4005″ · 10.173 mm
- Introduced
- 2023
- Case
- Rimless
- Parent
- .350 Legend
- Primary use
- Hunting
- Status
- Active
- Introduced
- 2023
- Type
- Rifle
- Origin
- United States
- Inventor
- Winchester
- Manufacturer
- Winchester
- Standard
- SAAMI
- Status
- Active
- Availability
- Common
- Case capacity
- 37 gr H₂O
- Twist (typical)
- 1:16
- Primer
- Small Rifle
- Case type
- Rimless
- Max pressure
- 45,000 psi
- Eff. range
- 250 yd
- Max range
- 500 yd
- Recoil
- 10–14 ft·lb
Ballistics
- By real loads
- 2,200–2,300 fps · 17 loads
- Parent case
- .350 Legend
Representative trajectory — modeled from a single velocity input (no published BC for this cartridge yet).
Performance
Buy links open .400 Legend ammunition at Rivertown Munitions.
Dimensionscase measurements · scale drawing · size vs familiar rounds
Case dimensions — the scale drawing at the top of the page is built from these.
SAAMI · approximate| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 10.17 | 0.401 | ✓ |
| Neck ⌀ | 10.84 | 0.427 | ~ |
| Shoulder ⌀ | n/a | ||
| Shoulder angle | n/a | ||
| Base ⌀ | 11.18 | 0.440 | ✓ |
| Rim ⌀ | 10.72 | 0.422 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.25 | 0.049 | ~ |
| Neck length | n/a | ||
| Case length | 41.91 | 1.650 | ✓ |
| Overall length | 57.40 | 2.260 | ✓ |
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. .400 Legend is highlighted below.
Factory loads
In production — 17 active loads across 7 brands. Top 15 shown · see all 17 →.
| Brand | Load | Grain | Bullet | FPS | ft·lb | BC |
|---|---|---|---|---|---|---|
| Barnes | VOR-TX | 200 | TTSX BT | 2,300 | 2,349 | — |
| Winchester | USA White Box | 200 | FMJ | 2,300 | 2,349 | — |
| Winchester | USA | 215 | FMJ | 2,300 | 2,525 | — |
| Winchester | Deer Season XP | 215 | Extreme Point | 2,300 | 2,525 | — |
| Remington | Core-Lokt | 215 | Core-Lokt SP | 2,300 | 2,525 | — |
| Hornady | Black | 215 | ELD-X | 2,300 | 2,525 | — |
| Federal | Power-Shok | 215 | SP | 2,300 | 2,525 | — |
| Winchester | Deer Season XP | 215 | XP Polymer Tip | 2,250 | 2,416 | — |
| Hornady | Black | 215 | FMJ BT | 2,250 | 2,416 | — |
| Winchester | Power Max Bonded | 215 | Protected HP | 2,250 | 2,416 | — |
| Winchester | Super-X Power-Point | 215 | SP | 2,250 | 2,416 | — |
| Hornady | American Whitetail | 215 | InterLock SP | 2,225 | 2,363 | — |
| Nosler | Trophy Grade | 215 | AccuBond | 2,225 | 2,363 | — |
| Sig Sauer | Elite Hunting | 215 | SP | 2,225 | 2,363 | — |
| Federal | Fusion | 215 | Fusion SP | 2,225 | 2,363 | — |
Velocities are manufacturer-stated (test-barrel). Discontinued loads dimmed.
Suitable powders
1 reloading powder listed for .400 Legend, fastest to slowest. Cross-reference in the finder →
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
Introduced in 2023 as Winchester expanded their Legend straight-wall hunting line. The .350 Legend had captured significant market share in Midwest straight-wall states (Michigan, Ohio, Indiana). The .400 Legend offers more energy for hunters who want a step up from .350 while maintaining the same legal compliance.
FAQs
- What twist rate does .400 Legend use?
- .400 Legend typically uses a 1:16 twist rate.
- What bullet diameter is .400 Legend?
- .400 Legend uses a 0.4005″ (10.173 mm) diameter bullet.
- Is .400 Legend still in production?
- .400 Legend is active; typical availability is common.
- What is .400 Legend used for?
- .400 Legend is primarily used for hunting.
- What is .400 Legend based on?
- .400 Legend is derived from the .350 Legend case.
- What are the best powders for .400 Legend?
- Reloading powders commonly listed for .400 Legend include Leverevolution.
Sources & provenance
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 17 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →