Which .300 Blackout Product Lines Are Most Common?
Current observed prices are in the 30-day price summary at the top of this page, recomputed from tracked retailer listings. The table below lists common product lines by type, grain, and use.
| Product Line | Type | Grain | Use Case |
|---|---|---|---|
| S&B .300 BLK | FMJ | 147gr | Range / Training |
| Magtech .300 BLK | FMJ | 115gr | Range / Training |
| Hornady Black 110gr | V-MAX | 110gr | Supersonic / Varmint |
| Hornady Black Sub-X | Sub-X | 190gr | Suppressed |
| Sig Sauer 300 BLK | OTM | 220gr | Suppressed |
| Sellier & Bellot 200gr Sub | FMJ | 200gr | Subsonic Range |
| Barnes VOR-TX 300 BLK | TAC-TX | 120gr | HD / Hunting |
What .300 Blackout Ammo Types Are Available?
- .300 Blackout supersonic — 110—125gr loads for full-velocity applications
- .300 Blackout subsonic — 190—220gr loads optimized for suppressors
- .300 Blackout hollow point — Expanding defense and hunting loads
How Much Does .300 Blackout Ammo Cost Per Round in 2026?
The .300 AAC Blackout was designed with one specific mission: give the AR-15 platform a .30-caliber option that works in short barrels and suppresses exceptionally well (AR-15 ammo cost per round across 5.56, .223 and .300 BLK sets it beside the platform's other chamberings). That design intent shapes the entire market — this is a caliber where subsonic loads outsell supersonic in many product lines.
As of November 11, 2026, .300 Blackout ammunition shows a median observed price of $1.30 per round across 28 tracked retailers (30-day window, 6,255 daily-best observations across 295 products). By purpose, range/practice (FMJ-class) ammunition has a median of $0.800 per round and premium/defensive (JHP, hunting, match) has a median of $1.50 per round. Supersonic loads (110—125gr) deliver ballistics similar to 7.62x39 from an AR-15 platform. These are the range/training loads for .300 BLK owners who want to practice without the cost of subsonic ammo. S&B and Magtech offer the lowest-cost supersonic options.
Subsonic loads (190—220gr) are the reason most people buy a .300 BLK in the first place. At velocities below 1,050 fps, these loads eliminate the supersonic crack when paired with a suppressor, producing a hearing-safe shooting experience. Hornady Sub-X is the standout in this segment because its bullet is specifically designed to expand at subsonic velocity — most traditional JHP designs won't expand below 1,000 fps.
The expansion problem: Standard hollow point bullets require minimum velocities of 1,200—1,800 fps to reliably expand. At .300 BLK subsonic velocities (~1,000 fps), they act like FMJ. Hornady Sub-X and Lehigh Defense Controlled Chaos are specifically engineered for subsonic expansion. If terminal performance matters for your use case, these are the loads to research.
.300 Blackout vs 5.56 NATO — Cost and Performance Comparison
The .300 BLK's main advantage is suppressor performance and short-barrel efficiency. It reaches full ballistic potential in a 9" barrel, versus 14.5—16" for 5.56 NATO. The tradeoff is cost: .300 BLK range ammo costs roughly 2x what 5.56 NATO costs per round. Most .300 BLK owners also own 5.56 uppers and train primarily with the cheaper caliber, reserving .300 BLK for specific applications.
Safety warning: .300 Blackout rounds will chamber in a 5.56 NATO rifle but cannot safely fire. This is the most dangerous cross-caliber compatibility issue in the AR platform. Always clearly mark your .300 BLK magazines and never mix ammunition on the same bench.
.300 Blackout Market Trends
The .300 Blackout market continues to grow as suppressor ownership increases following the NFA reform movement. Ammo selection has expanded significantly since 2023, with more manufacturers offering dedicated subsonic lines. Pricing has decreased moderately as production volume has increased.
.300 Blackout Guides & Buying Advice
- .300 Blackout ballistics data and terminal performance — Supersonic and subsonic velocity, energy, and drop across barrel lengths
- .300 BLK subsonic loads compared — Top picks with cycling notes and terminal performance reality
- Subsonic ammo beyond .300 Blackout — What 2026 manufacturer catalogs list in other cartridges
- .300 Blackout vs 5.56 for home defense — Over-penetration, suppressor use, and cost tradeoffs
- Subsonic vs supersonic ammo — When going slower makes sense and when it doesn't
- What is +P ammo and is it safe? — Pressure ratings and what they mean for your rifle
Related Calibers — 5.56 NATO, 7.62x39, .308 Win
- 5.56 NATO — Same AR-15 lower, much cheaper to shoot, better at distance
- 7.62x39 — Similar ballistics to supersonic .300 BLK, budget-friendly
- .308 Winchester — Full-power .30-caliber for longer range applications
- 9mm — Another popular suppressor host caliber, lower cost per round
.300 Blackout Ammo Brands — Hornady, Federal, Winchester & More
- Hornady — Black subsonic 208gr and Frontier supersonic.
- Federal — American Eagle and Premium.
- Winchester — USA .300 BLK.
- Remington — UMC .300 BLK. Budget brass-cased supersonic.
- Sellier & Bellot — Budget supersonic .300 BLK from the Czech Republic.
Where to Buy .300 Blackout Ammo Online
- Lucky Gunner
- MidwayUSA
- Target Sports USA — Free shipping on case quantities for members
- Palmetto State Armory — Competitive pricing on common loads
- Sportsman's Warehouse — Online and in-store pickup options