Lindcott Armory Rifle · SAAMI
8.6 Blackout
A suppressor-optimized bolt-action cartridge that dominates subsonic performance.
- Caliber
- 0.338″ · 8.585 mm
- Introduced
- 2022
- Case
- Rimless
- Parent
- 6.5 Creedmoor
- Primary use
- Hunting, Self-Defense, Long Range
- Status
- Active
- Introduced
- 2022
- Type
- Rifle
- Origin
- United States
- Inventor
- Q LLC / Kevin Brittingham
- Manufacturer
- Q LLC / Hornady
- Standard
- SAAMI
- Status
- Active
- Availability
- Common
- Case capacity
- 36 gr H₂O
- Twist (typical)
- 1:3
- Primer
- Large Rifle
- Case type
- Rimless
- Max pressure
- 62,000 psi
- Eff. range
- 300 yd
- Max range
- 1200 yd
- Recoil
- 8–12 ft·lb
- Subsonic
- Capable
Ballistics
Real trajectory computed from a representative load — Q Fix OTM Supersonic 215 gr, 1,900 fps, BC 0.354 G7 · 100 yd zero.
| Range | Velocity | Energy | Drop (in) | Drop (MOA) |
|---|---|---|---|---|
| 0 yd | 1900 | 1722 | -1.5″ | — |
| 100 yd | 1794 | 1537 | 0.0″ | 0.0 |
| 200 yd | 1691 | 1365 | -9.4″ | -4.5 |
| 300 yd | 1590 | 1207 | -31.0″ | -9.9 |
| 400 yd | 1492 | 1063 | -66.3″ | -15.8 |
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 8.6 Blackout 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 ⌀ | 8.59 | 0.338 | ✓ |
| Neck ⌀ | 9.30 | 0.366 | ~ |
| Shoulder ⌀ | 11.77 | 0.464 | ~ |
| Shoulder angle | 30° | — | ✓ |
| Base ⌀ | 11.95 | 0.470 | ✓ |
| Rim ⌀ | 11.99 | 0.472 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.37 | 0.054 | ✓ |
| Neck length | 8.39 | 0.330 | ≈ |
| Case length | 42.80 | 1.685 | ✓ |
| Overall length | 71.37 | 2.810 | ~ |
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. 8.6 Blackout is highlighted below.
Factory loads
In production — 14 active loads across 7 brands. Top 14 shown.
| Brand | Load | Grain | Bullet | FPS | ft·lb | BC |
|---|---|---|---|---|---|---|
| Q | Fix OTM Supersonic | 215 | OTM | 1,900 | 1,723 | 0.354 G7 |
| Lehigh Defense | Maximum Expansion | 210 | MEH | 1,300 | 788 | — |
| Hornady | Black | 285 | HPBT | 1,200 | 911 | — |
| Q | Fix 8.6 Blackout | 250 | HPBT | 1,150 | 734 | — |
| Nosler | Match Grade | 300 | HPBT Match | 1,050 | 734 | — |
| SilencerCo | Harvester OTM | 300 | OTM | 1,050 | 734 | — |
| SilencerCo | Harvester | 300 | Sierra MatchKing | 1,050 | 734 | — |
| Hornady | BLACK OTM | 250 | OTM | 1,050 | 612 | — |
| Federal | Subsonic OTM | 300 | OTM | 1,050 | 734 | — |
| Q | Fix FMJ Subsonic | 300 | FMJ OTM | 1,050 | 734 | — |
| Q | Fix 8.6 Blackout | 300 | OTM | 1,050 | 734 | — |
| Hornady | Subsonic | 395 | SUB-X | 1,050 | 967 | — |
| Barnes | TAC-TX | 300 | TTSX | 1,050 | 734 | — |
| Federal | American Eagle | 300 | OTM | 1,050 | 734 | — |
Velocities are manufacturer-stated (test-barrel). Discontinued loads dimmed.
Suitable powders
2 reloading powders listed for 8.6 Blackout, 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.
Lineage
Connected reference
History
Introduced by Q LLC (founded by Kevin Brittingham, also founder of SilencerCo) in 2022. Designed around suppressed bolt-action rifles for hunting, inspired by the 9x39mm Russian subsonic sniper concept. The Q Fix and Q Honey Badger platform uses it. SAAMI standardized in 2023.
FAQs
- What twist rate does 8.6 Blackout use?
- 8.6 Blackout typically uses a 1:3 twist rate.
- What bullet diameter is 8.6 Blackout?
- 8.6 Blackout uses a 0.338″ (8.585 mm) diameter bullet.
- Is 8.6 Blackout still in production?
- 8.6 Blackout is active; typical availability is common.
- What is 8.6 Blackout used for?
- 8.6 Blackout is primarily used for hunting, self-defense, long range.
- What is 8.6 Blackout based on?
- 8.6 Blackout is derived from the 6.5 Creedmoor case.
- What are the best powders for 8.6 Blackout?
- Reloading powders commonly listed for 8.6 Blackout include Lil'Gun, IMR 4227.
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 →