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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 rifle ready for any scenario.

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300 Blackout Subsonic Ammo

300 Blackout Subsonic Ammo
300 Blackout Firearms

300 Blackout Firearms
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  1. 15 Boxes of AAC 300 Blackout Ammo 125 Grain FMJ, 300rds

    15 Boxes of AAC 300 Blackout Ammo 125 Grain FMJ, 300rds

    SAVE $15.00
    Regular Price $194.85 Special Price $179.85 $0.60
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  2. Fiocchi Range Dynamics .300 Blackout 150gr FMJ Ammo, 50rds - 300BLKC

    Fiocchi Range Dynamics .300 Blackout 150gr FMJ Ammo, 50rds - 300BLKC

    Rating:
    80%
    (17)
    Regular Price $49.99 Special Price $29.99 $0.60
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  3. AAC 300 Blackout 150 Grain FMJ Ammo 250rds With AAC Blue 30 Cal Ammo Can

    AAC 300 Blackout 150 Grain FMJ Ammo 250rds With AAC Blue 30 Cal Ammo Can

    Rating:
    98%
    (39)
    Regular Price $169.99 Special Price $149.99 $0.60
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  4. AAC 300 Blackout 125 Grain FMJ Ammo 250rds With AAC Blue 30 Cal Ammo Can

    AAC 300 Blackout 125 Grain FMJ Ammo 250rds With AAC Blue 30 Cal Ammo Can

    Rating:
    99%
    (61)
    $159.99 $0.64
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  5. Winchester .300 AAC Blackout 200 gr Super Suppressed Subsonic Ammunition, 20 Rounds - SUP300BLK

    Winchester .300 AAC Blackout 200 gr Super Suppressed Subsonic Ammunition, 20 Rounds - SUP300BLK

    Rating:
    95%
    (100)
    Regular Price $24.99 Special Price $12.99 $0.65
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  6. AAC 300 Blackout Ammo 125 Grain FMJ 20rd Box

    AAC 300 Blackout Ammo 125 Grain FMJ 20rd Box

    Rating:
    98%
    (296)
    $12.99 $0.65
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  7. AAC 300 Blackout Ammo 150 Grain FMJ 20rd Box

    AAC 300 Blackout Ammo 150 Grain FMJ 20rd Box

    Rating:
    97%
    (87)
    $12.99 $0.65
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  8. 15 Boxes of AAC 300 Blackout Ammo 150 Grain FMJ, 300rds

    15 Boxes of AAC 300 Blackout Ammo 150 Grain FMJ, 300rds

    $194.85
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  9. AAC "Sabre Blade Black Tip" 300 Blackout 150 Grain 20rd Box Ammunition

    AAC "Sabre Blade Black Tip" 300 Blackout 150 Grain 20rd Box Ammunition

    Rating:
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    $13.49 $0.67
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  10. AAC "Sabre Blade Black Tip" 300 Blackout 125 Grain 20rd Box Ammunition

    AAC "Sabre Blade Black Tip" 300 Blackout 125 Grain 20rd Box Ammunition

    Rating:
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    $13.49 $0.67
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  11. Wolf Polyformance 145 gr FMJ Steel Cased 300 Blackout Ammunition, 20 Rounds

    Wolf Polyformance 145 gr FMJ Steel Cased 300 Blackout Ammunition, 20 Rounds - WOLA300AACFMJ

    Rating:
    60%
    (2)
    Regular Price $15.99 Special Price $13.99 $0.70
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  12. Ammo Inc Compete .300 AAC Blackout 155 gr OTBT 20rds

    Ammo Inc Compete .300 AAC Blackout 155 gr OTBT 20rds

    Rating:
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    Regular Price $24.99 Special Price $14.99 $0.75
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  13. Ammo Inc Range Pack .300 Blackout Ammo 150gr FMJ, 200rds

    Ammo Inc Range Pack .300 Blackout Ammo 150gr FMJ, 200rds - 300B150FMJ-A200

    Rating:
    97%
    (133)
    Regular Price $199.99 Special Price $149.99 $0.75
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  14. Magtech 300AAC Blackout 123gr FMJ Ammunition 50rds - 300BLKB

    Magtech 300AAC Blackout 123gr FMJ Ammunition 50rds - 300BLKB

    Rating:
    92%
    (51)
    Regular Price $41.99 Special Price $37.79 $0.76
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  15. Sellier & Bellot 300 AAC Blkout 147gr FMJ 20rds SB300BLKB

    Sellier & Bellot 300 AAC Blkout 147gr FMJ 20rds SB300BLKB

    Rating:
    97%
    (25)
    Regular Price $17.99 Special Price $15.39 $0.77
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  16. .300 AAC Ammo Rifle

    Magtech 300AAC Blackout 200gr FMJ Subsonic Ammunition 50rds - 300BLKBSUBA

    Rating:
    91%
    (83)
    Regular Price $42.99 Special Price $39.09 $0.78
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  17. Sellier & Bellot 300 AAC Blkout 124gr FMJ 20rds SB300BLKA

    Sellier & Bellot 300 AAC Blkout 124gr FMJ 20rds SB300BLKA

    Rating:
    91%
    (20)
    Regular Price $17.99 Special Price $15.69 $0.78
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  18. AAC 300 Blackout Ammo 220 Grain OTM 20rd Box

    AAC 300 Blackout Ammo 220 Grain OTM 20rd Box

    Rating:
    97%
    (214)
    $15.99 $0.80
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  19. AAC 300 Blackout Ammo 115 Grain Sierra JHP 20rd Box

    AAC 300 Blackout Ammo 115 Grain Sierra JHP 20rd Box

    Rating:
    95%
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    Regular Price $19.99 Special Price $15.99 $0.80
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  20. Winchester USA 300BLK 200gr FMJ-OT Sub Sonic Ammunition - 20rds - USA300BLKX

    Winchester USA 300BLK 200gr FMJ-OT Sub Sonic Ammunition - 20rds - USA300BLKX

    Regular Price $18.99 Special Price $16.49 $0.82
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  21. Winchester USA Target 147 gr FMJ 300 Blackout Ammunition, 20 Rounds

    Winchester USA Target 147 gr FMJ 300 Blackout Ammunition, 20 Rounds - USA300B147

    Rating:
    80%
    (1)
    Regular Price $18.99 Special Price $16.99 $0.85
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  22. AAC 300 Blackout Ammo 220 Grain Sierra MatchKing HPBT w/Cannelure 20rd Box

    AAC 300 Blackout Ammo 220 Grain Sierra MatchKing HPBT w/Cannelure 20rd Box

    Rating:
    96%
    (64)
    Regular Price $18.99 Special Price $16.99 $0.85
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  23. .300 AAC Rifle Ammo

    Prvi Partizan .300 AAC Blackout FMJ 125 gr 20 Rounds Ammunition - PP300BF

    Rating:
    100%
    (3)
    Regular Price $19.99 Special Price $17.39 $0.87
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  24. AAC "Sabre Blade Black Tip" 300 Blackout 220 Grain 20rd Box Ammunition

    AAC "Sabre Blade Black Tip" 300 Blackout 220 Grain 20rd Box Ammunition

    Rating:
    96%
    (93)
    $17.99 $0.90
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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.