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.300 BLK Ammo Prices: Cheapest In-Stock .300 BLK

The cheapest in-stock .300 BLK right now is Wolf Polyformance 300 AAC Blackout Ammo 145 Grain Full Metal Jacket - 300BLKFMJ1 Box of 20 at Target Sports USA, 48.7¢ per round (20 rounds for $9.74).

Retailer stock data as of Nov 6, 9:08 PM ET or later

Cheapest now
48.7¢
In stock
262
Retailers
6
November 2026 index
90.6¢

In-stock .300 BLK listings

262 of 262 listings

  1. Wolf Polyformance 300 AAC Blackout Ammo 145 Grain Full Metal Jacket - 300BLKFMJ1 Box of 20

    FMJ / practice145 grSteel

    Target Sports USA · 20 rds · $9.74

    48.7¢per round

  2. Freedom Munitions .300BLK 147 Grain Full Metal Jacket Brass Rifle Ammo, 500 Rounds, FM300F147N500

    FMJ / practice147 grBrass

    Optics Planet · 500 rds · $299.99

    60.0¢per round

  3. Wolf Ammunition - Polyformance - 300 Blackout - 145 Grain - FMJ 500 Rounds

    FMJ / practice145 grSteel

    True Shot Ammo · 500 rds · $304.88

    61.0¢per round

  4. Wolf - 300 Blackout - 145 Grain - FMJ - Steel Case 500 Rounds

    FMJ / practice145 grSteel

    True Shot Ammo · 500 rds · $304.88

    61.0¢per round

  5. Freedom Munitions .300 Blackout 150 Grain Full Metal Jacket Brass Rifle Ammo, 500 Rounds, FM300F150N500

    FMJ / practice150 grBrass

    Optics Planet · 500 rds · $304.99

    61.0¢per round

  6. Wolf Performance Ammo Polyformance Steel Case .300 AAC Blackout 145 Grain 20-Rounds

    Other145 grSteel

    GrabAGun · 20 rds · $12.89

    64.5¢per round

  7. Magtech - 300 Blackout - 123 Grain - FMJ 1000 Rounds

    FMJ / practice123 gr

    True Shot Ammo · 1,000 rds · $668.36

    66.8¢per round

  8. Wolf Ammunition - Polyformance - 300 Blackout - 145 Grain - FMJ 20 Rounds

    FMJ / practice145 grSteel

    True Shot Ammo · 20 rds · $13.89

    69.5¢per round

  9. Wolf - 300 Blackout - 145 Grain - FMJ - Steel Case 20 Rounds

    FMJ / practice145 grSteel

    True Shot Ammo · 20 rds · $13.89

    69.5¢per round

  10. MagTech Tactical/Training Brass .300 AAC Blackout 123-Grain 50-Rounds Full Metal Jacket

    FMJ / practice123 grBrass

    GrabAGun · 50 rds · $37.69

    75.4¢per round

  11. MAGTECH 300 AAC Blackout 123Gr FMJ 50rd

    FMJ / practice123 gr

    KYGUNCO · 50 rds · $37.94

    75.9¢per round

  12. Scorpion 300 Blackout Ammo 147 Grain Full Metal Jacket - 300B147FMJ-S20 Box of 20

    FMJ / practice147 gr

    Target Sports USA · 20 rds · $15.50

    77.5¢per round

  13. HORNADY 300 Blackout 208Gr FMJ Subsonic Frontier Ammo 20rd

    FMJ / practice208 gr

    KYGUNCO · 20 rds · $15.99

    80.0¢per round

  14. Scorpion 300 Blackout Ammo 147 Grain Full Metal Jacket Value Pack - 300B147FMJ-S200 Box of 200

    FMJ / practice147 gr

    Target Sports USA · 200 rds · $159.99

    80.0¢per round

  15. Magtech - 300 Blackout - 123 Grain - FMJ 50 Rounds

    FMJ / practice123 gr

    True Shot Ammo · 50 rds · $42.19

    84.4¢per round

  16. Scorpion Ammo Rifle Ammunition .300 AAC Blackout 147 Grain 20-Rounds FMJ

    FMJ / practice147 gr

    GrabAGun · 20 rds · $17.19

    86.0¢per round

  17. Magtech First Defense Tactical 300 AAC Blackout Ammo 123 Grain Full Metal Jacket Box of 50

    FMJ / practice123 gr

    MidwayUSA · 50 rds · $42.99

    86.0¢per round

  18. SinterFire Reduced Hazard .300 AAC Blackout 110 Grain Frangible Brass Cased Rifle Ammo, 50 Rounds, SF300BLK110RHA

    Frangible110 grBrass

    Optics Planet · 50 rds · $43.05

    86.1¢per round

  19. Winchester USA White Box 300 Blackout 147 Grains Full Metal Jacketed Brass Rifle Ammo, 20 Rounds, USA300B147

    FMJ / practice147 grBrass

    Optics Planet · 20 rds · $17.29

    86.5¢per round

  20. Prvi Partizan (PPU) - 300 Blackout - 125 Grain - HPBT 1000 Rounds

    Match125 gr

    True Shot Ammo · 1,000 rds · $865.85

    86.6¢per round

  21. Winchester - 300 Blackout - 125 Grain - OT 200 Rounds

    Other125 gr

    True Shot Ammo · 200 rds · $174.51

    87.3¢per round

  22. WINCHESTER USA Target 300 AAC Blackout 147gr Ammunition | 20 Rounds

    FMJ / practice147 gr

    KYGUNCO · 20 rds · $17.57

    87.9¢per round

  23. Sellier & Bellot 300 Blackout 124 Grain Full Metal Jacket Rifle Ammo, 20 Rounds, SB300BLKA

    FMJ / practice124 gr

    Optics Planet · 20 rds · $17.99

    90.0¢per round

  24. Sellier & Bellot 300 Blackout 147 Grain Full Metal Jacket Rifle Ammo, 20 Rounds, SB300BLKB

    FMJ / practice147 gr

    Optics Planet · 20 rds · $17.99

    90.0¢per round

  25. Sellier & Bellot 300 AAC Blackout Ammo 124 Grain Full Metal Jacket Box of 20

    FMJ / practice124 gr

    MidwayUSA · 20 rds · $17.99

    90.0¢per round

  26. WINCHESTER AMMO Super Suppressed 300 Blackout 200Gr 1060fps - 200rd Case

    Other200 gr

    KYGUNCO · 200 rds · $179.99

    90.0¢per round

  27. Magtech 300 AAC Blackout Ammo 200 Grain Full Metal Jacket Box of 50

    FMJ / practice200 gr

    MidwayUSA · 50 rds · $45.49

    91.0¢per round

  28. Sig Sauer Supersonic CTT Brass .300 AAC Blackout 125 Grain 20-Rounds FMJ

    FMJ / practice125 grBrass

    GrabAGun · 20 rds · $18.29

    91.5¢per round

  29. SIG SAUER 300 Blk 125Gr CTT Supersonic 20rd Ammo

    Other125 gr

    KYGUNCO · 20 rds · $18.39

    92.0¢per round

  30. Winchester - Super Suppressed - 300 Blackout - 200 Grain - OT - Subsonic 200 Rounds

    Other200 gr

    True Shot Ammo · 200 rds · $185.85

    92.9¢per round

  31. SinterFire GreenLine .300 AAC Blackout 110 Grain Frangible Brass Rifle Ammo, 50 Rounds, SF300BLK110GL-C

    Frangible110 grBrass

    Optics Planet · 50 rds · $46.49

    93.0¢per round

  32. WINCHESTER AMMO 300 BLK Super Suppressd FMJOT 200Gr Subsonic 125rd

    FMJ / practice200 gr

    KYGUNCO · 125 rds · $116.75

    93.4¢per round

  33. Norma Range & Training .300 Blackout 147 Grain FMJ Brass Cased Rifle Ammo, 20 Rounds, 601801709

    FMJ / practice147 grBrass

    Optics Planet · 20 rds · $18.99

    95.0¢per round

  34. WINCHESTER AMMO Super Suppressed 300 Blackout 200Gr 1060fps - 20rd Box

    Other200 gr

    KYGUNCO · 20 rds · $18.99

    95.0¢per round

  35. Norma Range & Training Brass .300 AAC Blackout 147 Grain 20-Rounds FMJ

    FMJ / practice147 grBrass

    GrabAGun · 20 rds · $19.09

    95.5¢per round

  36. NORMA AMMO 300 AAC Blk R&T 147Gr 20rd

    Other147 gr

    KYGUNCO · 20 rds · $19.16

    95.8¢per round

  37. Winchester USA Brass .300 AAC Blackout 147-Grain 20-Rounds FMJ

    FMJ / practice147 grBrass

    GrabAGun · 20 rds · $19.29

    96.5¢per round

  38. Prvi Partizan (PPU) - 300 Blackout - 125 Grain - HPBT 20 Rounds

    Match125 gr

    True Shot Ammo · 20 rds · $19.72

    98.6¢per round

  39. Magtech 300 Blackout 123 Grain Full Metal Jacket Brass Cased Rifle Ammo, 50 Rounds, 300BLKB

    FMJ / practice123 grBrass

    Optics Planet · 50 rds · $49.49

    99.0¢per round

  40. Sellier & Bellot .300 AAC Blackout 124 Grain Full Metal Jacket Rifle Ammo, 1000 Rounds, SB300BLKACS

    FMJ / practice124 gr

    Optics Planet · 1,000 rds · $991.99

    99.2¢per round

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.300 BLK ammo price questions

▶What is a good price per round for .300 BLK ammo?
Compare .300 BLK practice ammo with the monthly Ammo Price Index figure at the top of this page, the median price per round of ordinary FMJ loads across retailers: anything under it is cheaper than the typical retailer's practice ammo. Defensive and match loads cost more by design, so compare them against their own kind with the load filter.
▶How is .300 BLK price per round calculated here?
Each listing's advertised price is divided by the round count stated in its title. Prices are before shipping and tax, so a cheaper listing with paid shipping can cost more delivered than one with free shipping.
▶Is bulk .300 BLK ammo cheaper per round?
Usually, but not always. Set the package size filter to 1,000+ and compare the per-round column against box prices; a sale on a 50-round box can beat a full case.