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Last updated May 13, 2026

.300 Blackout supersonic ammo prices

Compare standard velocity FMJ and expanding loads across retailers.

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

Observed 30-Day Price Range (Per Round): median: 1.625, lowest: 0.320, highest: 9.000, sample size: 1585.

Lowest observed price in the trailing 7-day window: 0.360.

Prices last updated May 13, 2026 · 75 listings tracked across 4 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.

.300 BLK supersonic options

Product LineGrainBulletCountTypical CPR
Magtech 300 BLK123grFMJ50$0.50—0.70
Federal AE 300 BLK150grFMJ20$0.55—0.75
Sig Sauer 300 BLK125grOTM20$0.65—0.90

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 supersonic is the cheapest way to run a .300 BLK. Note that supersonic loads through a suppressor will still produce a sonic crack — the suppressor only reduces muzzle blast.

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