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300 Blackout Ammo

Stock up on premium .300 Blackout ammo at Palmetto State Armory, your trusted source for reliable and affordable ammunition. Choose from a wide range of supersonic and subsonic rounds from top brands, perfect for hunting, self-defense, or target shooting. While you are stocking up on blackout ammo check out our large selection of 300 blackout uppers and 300 blackout rifles.  With competitive prices, fast shipping, and unmatched quality, we make it easy to keep your ammo stocked. 

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300 Blackout Subsonic Ammo

300 Blackout Subsonic Ammo
300 Blackout Firearms

300 Blackout Firearms
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  1. Remington UMC 150 gr FMJ 300 Blackout Ammunition, 200 Rounds

    Remington UMC 150 gr FMJ 300 Blackout Ammunition, 200 Rounds - 20107

    Regular Price $331.99 Special Price $239.99 $1.20
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  2. Barnes Barnes Ammunition .300 AAC Blackout Ammunition, 20 Rounds JHP 120Gr - 32004

    Barnes Barnes Ammunition .300 AAC Blackout Ammunition, 20 Rounds JHP 120Gr - 32004

    Regular Price $27.99 Special Price $24.89 $1.24
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  3. .300 AAC Ammo American Eagle 300 AAC Blackout 150gr FMJ-BT Ammunition 20rds - AE300BLK1

    American Eagle 300 AAC Blackout 150gr FMJ-BT Ammunition 20rds - AE300BLK1

    Rating:
    86%
    (7)
    Regular Price $27.99 Special Price $24.99 $1.25
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  4. Wilson Combat .300 AAC Blackout 110 gr PTFB 20rds

    Wilson Combat .300 AAC Blackout 110 gr PTFB 20rds

    Regular Price $29.99 Special Price $26.59 $1.33
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  5. .300 AAC Ammo

    Sig Sauer 300 AAC Blackout 125gr OTM Elite Match Grade Ammunition 20rds - E300A1-20

    Rating:
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    Regular Price $29.99 Special Price $26.99 $1.35
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  6. HSM 300 AAC Blackout 125gr SIERRA SPT Ammunition New Manufactured 20rds - HSM-300BLK-3-N

    HSM 300 AAC Blackout 125gr SIERRA SPT Ammunition New Manufactured 20rds - HSM-300BLK-3-N

    Rating:
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    Regular Price $30.99 Special Price $27.99 $1.40
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  7. Hornady Black 300 AAC Blackout 110gr V-MAX Centerfire Rifle Ammunition 20rds - 80873

    Hornady Black 300 AAC Blackout 110gr V-MAX Centerfire Rifle Ammunition 20rds - 80873

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    Regular Price $31.99 Special Price $28.09 $1.40
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  8. DoubleTap Colt Defense .300 AAC Blackout Ammunition, 20 Rounds Hollow Point 125Gr - 300BLK125CT

    DoubleTap Colt Defense .300 AAC Blackout Ammunition, 20 Rounds Hollow Point 125Gr - 300BLK125CT

    Regular Price $31.99 Special Price $28.79 $1.44
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  9. .300 AAC Ammo

    American Eagle 300 AAC Blackout 220gr OTM Sub-Sonic Ammunition 20rds - AE300BLKSUP2

    Rating:
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    Regular Price $32.99 Special Price $28.89 $1.44
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  10. Federal Power-Shok 150 gr Jacketed Soft Point .300 Blackout Ammo, 20/box - 300BLKB

    Federal Power-Shok 150 gr Jacketed Soft Point .300 Blackout Ammo, 20/box - 300BLKB

    Rating:
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    Regular Price $39.99 Special Price $28.99 $1.45
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  11. .300 AAC Ammo Rifle

    Hornady Subsonic 300 Blackout 190gr SUB-X 20rds Ammunition - 80877

    Rating:
    85%
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    Regular Price $34.99 Special Price $29.99 $1.50
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  12. Hornady Black .300 AAC Blackout 110 gr NTX 20rds Rifle Ammo for Tactical Use - 80862

    Hornady Black .300 AAC Blackout 110 gr NTX 20rds Rifle Ammo for Tactical Use - 80862

    Regular Price $32.99 Special Price $29.99 $1.50
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  13. SIG Sauer 300 AAC Blackout 220gr, Match, Subsonic Ammunition - C300A2-20

    SIG Sauer 300 AAC Blackout 220gr, Match, Subsonic Ammunition - C300A2-20

    Regular Price $32.99 Special Price $29.99 $1.50
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  14. Federal Fusion .300 AAC 150 gr FSP 20 Rounds Ammunition - F300BMSR2

    Federal Fusion .300 AAC 150 gr FSP 20 Rounds Ammunition - F300BMSR2

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    Regular Price $41.99 Special Price $30.99 $1.55
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  15. Hornady 300 AAC Blackout 135gr FTX Custom Ammunition, 20 Round Box - 80881

    Hornady 300 AAC Blackout 135gr FTX Custom Ammunition, 20 Round Box - 80881

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    Regular Price $36.99 Special Price $32.99 $1.65
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  16. HSM 300 AAC Blackout 220gr SMK HPBT Sub-Sonic Ammunition New Manufactured 20rds - HSM-300BLK-4-N

    HSM 300 AAC Blackout 220gr SMK HPBT Sub-Sonic Ammunition New Manufactured 20rds - HSM-300BLK-4-N

    Regular Price $37.99 Special Price $33.99 $1.70
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  17. NOVX Copper Pentagon 125gr .300 BLK Ammo, 20rds - 300BLK125CP-20

    NOVX Copper Pentagon 125gr .300 BLK Ammo, 20rds - 300BLK125CP-20

    Regular Price $37.99 Special Price $33.99 $1.70
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  18. Hornady Custom .300 AAC Blackout Ammunition, 20 Rounds CX 110Gr - 808794

    Hornady Custom .300 AAC Blackout Ammunition, 20 Rounds CX 110Gr - 808794

    Regular Price $38.99 Special Price $34.49 $1.72
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  19. Federal Power-Shok 120 gr Copper Hollow Point .300 Blackout Ammo, 20/box - 300BLK150LFA

    Federal Power-Shok 120 gr Copper Hollow Point .300 Blackout Ammo, 20/box - 300BLK150LFA

    Rating:
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    Regular Price $38.99 Special Price $34.99 $1.75
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  20. Fort Scott Munitions Tumble Upon Impact .300 AAC Blackout 115 gr Ammo SCS - 20rds - 300115SCV

    Fort Scott Munitions Tumble Upon Impact .300 AAC Blackout 115 gr Ammo SCS - 20rds - 300115SCV

    Regular Price $38.99 Special Price $34.99 $1.75
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  21. Remington Core-Lokt .300 AAC Blackout 120 gr Ammo Copper HP - 20rds - R27857

    Remington Core-Lokt .300 AAC Blackout 120 gr Ammo Copper HP - 20rds - R27857

    Regular Price $47.99 Special Price $34.99 $1.75
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  22. Wilson Combat .300 AAC Blackout 220 gr BTHP 20rds

    Wilson Combat .300 AAC Blackout 220 gr BTHP 20rds

    Rating:
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    Regular Price $38.99 Special Price $34.99 $1.75
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  23. Fort Scott Munitions Tumble Upon Impact .300 AAC Blackout 190 gr Ammo SCS - 20rds - 300190SCVSS

    Fort Scott Munitions Tumble Upon Impact .300 AAC Blackout 190 gr Ammo SCS - 20rds - 300190SCVSS

    Rating:
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    Regular Price $48.99 Special Price $35.99 $1.80
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  24. Barnes Bullets Precision Match .300 AAC Blackout 220 gr Ammo JHP - 20rds - 32134

    Barnes Bullets Precision Match .300 AAC Blackout 220 gr Ammo JHP - 20rds - 32134

    Regular Price $41.99 Special Price $37.99 $1.90
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Learn More about .300 AAC Blackout Ammo

History of .300 AAC Blackout Ammo

The .300 AAC Blackout, developed in the late 2000s by Advanced Armament Corporation with Remington Defense, was designed to overcome the limitations of the 5.56 NATO in AR-15 platforms. The goal was to create a cartridge that excelled with both supersonic and subsonic loads, performed well in short barrels, and remained compatible with standard AR-15 magazines and bolts. Officially standardized by SAAMI in 2011, the .300 BLK quickly gained popularity in both military and civilian markets, appealing to shooters who value flexibility and performance across diverse scenarios.

Practical Application

The .300 BLK stands out for its versatility, excelling in short-barreled rifles, which makes it ideal for home defense and tactical scenarios where compact firearms are preferred. Its performance with a suppressor provides near-silent operation, perfect for close-quarters environments. Hunters also appreciate the .300 BLK’s effectiveness on medium-sized game like deer and hogs at shorter ranges. Additionally, its compatibility with AR-15 platforms allows users to switch between .300 BLK and 5.56 with just a barrel change, offering flexibility without the need for a new rifle setup.

Accuracy

The .300 BLK offers impressive accuracy at closer ranges, making it ideal for dense woods, urban settings, and other short-to-medium range scenarios. Its manageable recoil helps shooters stay on target for quicker follow-up shots, providing reliable performance within 100 to 200 yards. Paired with a quality optic, the .300 BLK excels in hunting, home defense, and tactical training, delivering dependable accuracy in a variety of environments.

Supersonic and Subsonic Differences

One of the most distinctive features of the .300 BLK is its ability to switch between supersonic and subsonic loads, which opens up options based on what you need the round to do.

  1. Supersonic Rounds: These rounds, typically between 110 and 150 grains, hit at higher muzzle velocities around 2,000 feet per second (fps). Supersonic rounds offer a flatter trajectory and greater impact energy, which can be a big plus for hunting or self-defense situations. They’re louder than subsonic rounds but provide a powerful punch when sound isn’t a concern.
  2. Subsonic Rounds: Loaded with heavier bullets (often 190 grains or more), subsonic .300 BLK ammo is designed to stay under the sound barrier, keeping noise low. When paired with a suppressor, subsonic rounds are extremely quiet, making them a favorite for tactical scenarios, hunting, or even range practice where stealth or comfort is key. While you sacrifice a bit of long-range effectiveness, the subsonic option brings great versatility for those looking to reduce noise.

Switching between these loads gives shooters the freedom to customize based on what’s needed at the time, whether it’s maximum stopping power with supersonic or minimal noise with subsonic.

Affordability

The .300 BLK is generally more expensive than standard .223 or 5.56 ammo, largely due to lower production volumes and its specialized nature. Subsonic rounds add to the cost due to a smaller market, placing .300 BLK pricing between 5.56 and .308 Win. While pricier, it offers unique benefits—excellent performance in short barrels, versatility between supersonic and subsonic loads, and compatibility with suppressors. For frequent shooters, buying in bulk or reloading can help manage costs, making the .300 BLK more affordable over time.

Why Order .300 AAC Blackout Ammo from Palmetto State Armory?

Palmetto State Armory offers high-quality .300 Blackout ammo at competitive prices, making it the ideal choice for shooters seeking reliability and performance. With a wide selection of supersonic and subsonic options, our .300 Blackout rounds are perfect for hunting, home defense, and tactical training. Plus, our fast shipping ensures you get your ammo quickly, so you’re always ready for your next range day or hunting trip. Trust Palmetto State Armory for premium .300 Blackout ammo to meet all your shooting needs.