Lindcott Armory Rifle · SAAMI
6.5mm Weatherby RPM
Weatherby's rebated precision rifle magnum.
- Caliber
- 0.264″ · 6.706 mm
- Introduced
- 2021
- Case
- Rebated
- Parent
- .284 Winchester
- Primary use
- Hunting, Long Range
- Status
- Active
- Introduced
- 2021
- Type
- Rifle
- Origin
- United States
- Inventor
- Weatherby
- Manufacturer
- Weatherby
- Standard
- SAAMI
- Status
- Active
- Availability
- Common
- Case capacity
- 70 gr H₂O
- Twist (typical)
- 1:8
- Primer
- Large Rifle Magnum
- Case type
- Rebated
- Max pressure
- 65,000 psi
- Eff. range
- 600 yd
- Max range
- 1600 yd
- Recoil
- 6–9 ft·lb
Ballistics
Real trajectory computed from a representative load — Hornady Precision Hunter ELD-X 143 gr, 3,050 fps, BC 0.320 G7 · 100 yd zero.
| Range | Velocity | Energy | Drop (in) | Drop (MOA) |
|---|---|---|---|---|
| 0 yd | 3049 | 2952 | -1.5″ | — |
| 100 yd | 2901 | 2673 | 0.0″ | 0.0 |
| 200 yd | 2757 | 2413 | -2.6″ | -1.3 |
| 300 yd | 2616 | 2172 | -9.9″ | -3.1 |
| 400 yd | 2479 | 1951 | -22.2″ | -5.3 |
| 500 yd | 2346 | 1747 | -40.1″ | -7.7 |
| 600 yd | 2217 | 1560 | -64.4″ | -10.3 |
| 700 yd | 2091 | 1388 | -95.8″ | -13.1 |
| 800 yd | 1969 | 1231 | -135.2″ | -16.1 |
Point-mass G7/G1 drag model, standard atmosphere — within ~2% of reference solvers to 1000 yd; real barrels and conditions vary. Open in Ballistic Compare →
Performance
Buy links open 6.5mm Weatherby RPM 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 · verified| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 6.71 | 0.264 | ✓ |
| Neck ⌀ | 7.49 | 0.295 | ✓ |
| Shoulder ⌀ | 12.14 | 0.478 | ✓ |
| Shoulder angle | 35° | — | ✓ |
| Base ⌀ | 12.70 | 0.500 | ✓ |
| Rim ⌀ | 12.01 | 0.473 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.37 | 0.054 | ✓ |
| Neck length | 7.16 | 0.282 | ≈ |
| Case length | 65.28 | 2.570 | ✓ |
| Overall length | 84.84 | 3.340 | ✓ |
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. 6.5mm Weatherby RPM is highlighted below.
Factory loads
In production — 14 active loads across 7 brands. Top 14 shown.
| Brand | Load | Grain | Bullet | FPS | ft·lb | BC |
|---|---|---|---|---|---|---|
| Weatherby | Select Plus | 127 | Barnes LRX | 3,225 | 2,932 | 0.238 G7 |
| Nosler | Trophy Grade AccuBond | 140 | AccuBond | 3,075 | 2,939 | 0.260 G7 |
| Weatherby | Select Plus OTM | 140 | OTM | 3,075 | 2,939 | 0.315 G7 |
| Weatherby | Select Plus | 140 | Hornady ELD-X | 3,075 | 2,939 | 0.315 G7 |
| Weatherby | Select Plus Hornady ELD-X | 140 | ELD-X | 3,075 | 2,939 | 0.315 G7 |
| Hornady | Precision Hunter ELD-X | 143 | ELD-X | 3,050 | 2,953 | 0.320 G7 |
| Barnes | VOR-TX | 127 | LRX BT | 3,225 | 2,932 | — |
| Federal | Terminal Ascent | 130 | Terminal Ascent | 3,200 | 2,955 | — |
| Norma | Oryx | 130 | Oryx | 3,200 | 2,955 | — |
| Remington | Core-Lokt | 130 | Core-Lokt | 3,200 | 2,955 | — |
| Weatherby | Select Plus SP | 140 | SP | 3,075 | 2,939 | — |
| Barnes | VOR-TX LR | 140 | LRX BT | 3,075 | 2,939 | — |
| Norma | Bondstrike | 143 | Bondstrike | 3,050 | 2,953 | — |
| Remington | Core-Lokt | 143 | Core-Lokt | 3,050 | 2,953 | — |
Velocities are manufacturer-stated (test-barrel). Discontinued loads dimmed.
Suitable powders
2 reloading powders listed for 6.5mm Weatherby RPM, 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 6.5mm Weatherby RPM
1 model in the database chamber 6.5mm Weatherby RPM. Browse all →
Lineage
Connected reference
History
Introduced by Weatherby in 2021 as the cartridge for their new Weatherby 307 rifle. Uses a rebated rim for standard bolt face. Positioned between 6.5 Creedmoor and 6.5 PRC in the market.
FAQs
- What twist rate does 6.5mm Weatherby RPM use?
- 6.5mm Weatherby RPM typically uses a 1:8 twist rate.
- What bullet diameter is 6.5mm Weatherby RPM?
- 6.5mm Weatherby RPM uses a 0.264″ (6.706 mm) diameter bullet.
- Is 6.5mm Weatherby RPM still in production?
- 6.5mm Weatherby RPM is active; typical availability is common.
- What is 6.5mm Weatherby RPM used for?
- 6.5mm Weatherby RPM is primarily used for hunting, long range.
- What is 6.5mm Weatherby RPM based on?
- 6.5mm Weatherby RPM is derived from the .284 Winchester case.
- What are the best powders for 6.5mm Weatherby RPM?
- Reloading powders commonly listed for 6.5mm Weatherby RPM include Reloader 26, Reloader 33.
Sources & provenance
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 14 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →