Rifle · SAAMI
.300 AAC Blackout
AR-15 compatible .30-caliber cartridge optimized for short barrels and suppressor use.
- Caliber
- 0.3079″ · 7.82 mm
- Introduced
- 2010
- Case
- Rimless
- Parent
- .221 Remington Fireball
- Primary use
- Military, Hunting, Self Defense
- Status
- Active
- Introduced
- 2010
- Type
- Rifle
- Origin
- United States
- Inventor
- Advanced Armament Corporation
- Manufacturer
- AAC / Remington
- Standard
- SAAMI
- Status
- Active
- Availability
- Common
- Case capacity
- 25.1 gr H₂O
- Twist (typical)
- 1:8
- Primer
- Small Rifle
- Case type
- Rimless
- Max pressure
- 55,000 psi, SAAMI transducer
- Eff. range
- 500 yd
- Max range
- 5850 yd
- Recoil
- 7–17.8 ft·lb
- Subsonic
- Capable
Ballistics
Real trajectory computed from a representative load — Federal American Eagle Rifle Suppressor 220 gr, 1,000 fps, BC 0.650 G1 · 25 yd zero · sight height 1.5 in.
| Range | Velocity | Energy | Drop (in) | Drop (MOA) |
|---|---|---|---|---|
| 0 yd | 1000 | 488 | -1.5″ | — |
| 25 yd | 992 | 481 | 0.0″ | 0.0 |
| 50 yd | 984 | 473 | -0.7″ | -1.3 |
| 75 yd | 977 | 466 | -3.7″ | -4.7 |
| 100 yd | 970 | 459 | -8.9″ | -8.5 |
| 125 yd | 963 | 453 | -16.4″ | -12.5 |
| 150 yd | 956 | 446 | -26.3″ | -16.7 |
| 175 yd | 949 | 440 | -38.5″ | -21.0 |
| 200 yd | 943 | 434 | -53.2″ | -25.4 |
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
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 ⌀ | 7.82 | 0.308 | ✓ |
| Neck ⌀ | 8.48 | 0.334 | ✓ |
| Shoulder ⌀ | 9.16 | 0.361 | ~ |
| Shoulder angle | 23° | — | ✓ |
| Base ⌀ | 9.55 | 0.376 | ✓ |
| Rim ⌀ | 9.60 | 0.378 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.14 | 0.045 | ✓ |
| Neck length | 6.75 | 0.266 | ≈ |
| Case length | 34.75 | 1.368 | ✓ |
| 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. .300 AAC Blackout is highlighted below.
Factory loads
In production — 163 active loads across 44 brands. Top 1 shown.
| Brand | Load | Grain | Bullet | FPS | ft·lb | BC |
|---|---|---|---|---|---|---|
| Federal | American Eagle Rifle Suppressor | 220 | OTM | 1,000 | 488 | 0.650 G1 |
Velocities are manufacturer-stated (test-barrel). Discontinued loads are shaded and marked.
Suitable powders
15 reloading powders listed for .300 AAC 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.
Firearms chambered in .300 AAC Blackout
Lineage
Connected reference
History
Created in 2011 by Advanced Armament Corp for special operations. Goal was .30-caliber performance in AR-15 magazines with excellent suppressed performance. Uses same bolt as 5.56 NATO.
FAQs
- What twist rate does .300 AAC Blackout use?
- .300 AAC Blackout typically uses a 1:8 twist rate.
- What bullet diameter is .300 AAC Blackout?
- .300 AAC Blackout uses a 0.3079″ (7.82 mm) diameter bullet.
- Is .300 AAC Blackout still in production?
- .300 AAC Blackout is active; typical availability is common.
- What is .300 AAC Blackout used for?
- .300 AAC Blackout is primarily used for military, hunting, self defense.
- What is .300 AAC Blackout based on?
- .300 AAC Blackout is derived from the .221 Remington Fireball case.
- What are the best powders for .300 AAC Blackout?
- Reloading powders commonly listed for .300 AAC Blackout include Accurate 1680, N110, H110, Lil'Gun, among 15 suitable options.
Sources & provenance
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 163 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →
