Rifle · CIP
6.5-284 Norma
Legendary long-range competition wildcat.
- Caliber
- 0.2642″ · 6.71 mm
- Introduced
- 1999
- Case
- Rebated
- Parent
- .284 Winchester
- Primary use
- Competition, Target, Hunting
- Status
- Active
- Introduced
- 1999
- Type
- Rifle
- Origin
- United States/Sweden
- Inventor
- Wildcatters / Norma
- Manufacturer
- Norma (commercial ammunition)
- Standard
- CIP
- Status
- Active
- Availability
- Moderate
- Case capacity
- 66 gr H₂O
- Twist (typical)
- 1:228
- Primer
- Large Rifle
- Case type
- Rebated
- Max pressure
- 58,000 psi, SAAMI transducer
- Eff. range
- 1000 yd
- Max range
- 4500 yd
- Recoil
- 12–16 ft·lb
Ballistics
Published velocity/energy data isn't available for 6.5-284 Norma. Parent case: .284 Winchester.
Performance
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 ⌀ | 6.71 | 0.264 | ✓ |
| Neck ⌀ | 7.53 | 0.296 | ✓ |
| Shoulder ⌀ | 12.06 | 0.475 | ✓ |
| Shoulder angle | 35.1° | — | ✓ |
| Base ⌀ | 12.72 | 0.501 | ✓ |
| Rim ⌀ | 12.01 | 0.473 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.37 | 0.054 | ✓ |
| Neck length | 6.92 | 0.272 | ≈ |
| Case length | 55.12 | 2.170 | ✓ |
| Overall length | 82.00 | 3.228 | ✓ |
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. 6.5-284 Norma is highlighted below.
Factory loads
Being verified
Advertised FPS, energy, and BC are withheld until loads clear verification.
Suitable powders
14 reloading powders listed for 6.5-284 Norma, 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.
Firearms chambered in 6.5-284 Norma
Lineage
Connected reference
History
Developed in 1960s by necking .284 Winchester to 6.5mm. Quickly became dominant in long-range competition. Swedish ammunition maker Norma began producing factory ammunition in 1990s. It is SAAMI-standardized (listed in ANSI/SAAMI Z299.4-2025). Dominated 1000-yard competition until 6.5 Creedmoor's introduction. Offers more velocity than Creedmoor but requires long action. Still very popular in F-Class and long-range hunting.
FAQs
- What twist rate does 6.5-284 Norma use?
- 6.5-284 Norma typically uses a 1:228 twist rate.
- What bullet diameter is 6.5-284 Norma?
- 6.5-284 Norma uses a 0.2642″ (6.71 mm) diameter bullet.
- Is 6.5-284 Norma still in production?
- 6.5-284 Norma is active; typical availability is moderate.
- What is 6.5-284 Norma used for?
- 6.5-284 Norma is primarily used for competition, target, hunting.
- What is 6.5-284 Norma based on?
- 6.5-284 Norma is derived from the .284 Winchester case.
- What are the best powders for 6.5-284 Norma?
- Reloading powders commonly listed for 6.5-284 Norma include N550, N555, URP, Reloader 17, among 14 suitable options.
Sources & provenance
- Standard SAAMI — ANSI/SAAMI Z299.4-2025 — Centerfire Rifle Velocity & Pressure Data · representative_gun, grain_ballistics archived
- Standard C.I.P. — C.I.P. TDCC — Tables of Dimensions of Cartridges and Chambers
- Standard SAAMI — ANSI/SAAMI Z299 — Cartridge & Chamber Drawings archived
- Manufacturer Nosler — 6.5-284 Norma 140gr HPBT Custom Competition Match Grade Ammunition · representative_gun, grain_ballistics archived
- Manufacturer Norma — Norma Golden Target 6.5-284 Norma 130gr (product 10166092) · grain_ballistics, representative_gun
- Manufacturer Norma — Norma Bondstrike 6.5-284 Norma 143 gr (product 20166422) · grain_ballistics, representative_gun archived
- Manufacturer Nosler — 6.5-284 Norma 140gr AccuBond Trophy Grade Ammunition · representative_gun, grain_ballistics archived
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 22 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →
