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Last updated November 11, 2026

.300 Blackout supersonic ammo prices

Compare standard velocity FMJ and expanding loads across retailers.

Search .300 BLK Supersonic by Cost per Round
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IronScout provides observed price and availability data for .300 Blackout ammunition across tracked online retailers. Data reflects historical price observations and does not include purchase recommendations.

These figures cover all tracked .300 Blackout listings, not only .300 Blackout supersonic loads.

Observed 30-Day Price (Per Round): median: $1.299, sample size: 6255.

Prices last updated November 11, 2026 · 295 listings tracked across 28 retailers · 31 days with data in the 30-day window

How we calculate this

SQL PERCENTILE_CONT over daily-best per-product-per-day observed in-stock prices

  • Daily-best is MIN(price_per_round) per (caliber, product, UTC day).
  • Only in-stock observations included.
  • Coverage varies by retailer and source.
View 295 tracked .300 BLK products →

.300 BLK supersonic options

Product LineGrainBulletCount
Magtech 300 BLK123grFMJ50
Federal AE 300 BLK150grFMJ20
Sig Sauer 300 BLK125grOTM20

What to know

Supersonic .300 BLK (110—150gr at 2,000—2,400 fps) offers ballistics similar to 7.62x39 from an AR-15 platform. FMJ is the common supersonic range load. Note that supersonic loads through a suppressor will still produce a sonic crack — the suppressor only reduces muzzle blast.

Related

Frequently asked questions

What is .300 Blackout supersonic ammo for?
Supersonic .300 Blackout (110–125gr at 2,200+ fps) fires a .30-caliber bullet from an AR-15 platform. It offers more energy than 5.56 at close range while using the same lower receiver, magazines, and bolt carrier group.
How does supersonic .300 BLK compare to 5.56?
Supersonic .300 BLK delivers more energy at close range (under 200 yards) with a larger .30-caliber bullet. Beyond 200 yards, 5.56 has better trajectory due to higher velocity. .300 BLK costs more per round than 5.56.
How is supersonic .300 Blackout priced?
Supersonic .300 BLK FMJ range loads are the lowest-cost tier; hunting and defense loads with expanding bullets cost more. .300 BLK is typically more expensive per round than 5.56 due to lower production volume. Current observed .300 Blackout prices are in the 30-day price summary at the top of this page.