Menu
Close
Search
Search Log In Help Center
View Cart
Daily Deals
Clearance
Close
Daily Deals
Clearance
My Account
Help Center

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. 

Shop by Caliber

Shop by Caliber
300 Blackout Subsonic Ammo

300 Blackout Subsonic Ammo
300 Blackout Firearms

300 Blackout Firearms
View as Grid View List View

Items 1-24 of 166

Page
Set Descending Direction
  1. 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%
    (84)
    $169.99 $0.68
    Add to Wish List Add to Compare
  2. 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 $19.99 Special Price $15.99 $0.80
    Add to Wish List Add to Compare
  3. 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:
    94%
    (384)
    Regular Price $22.99 Special Price $15.99 $0.80
    Add to Wish List Add to Compare
  4. .300 AAC Ammo Rifle

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

    Rating:
    92%
    (85)
    Regular Price $49.99 Special Price $39.99 $0.80
    Add to Wish List Add to Compare
  5. Prvi Partizan .300 AAC Blackout Ammo

    Prvi Partizan .300 AAC Blackout HPBT 125 gr 20 Rounds Ammunition - PP300B

    Rating:
    98%
    (9)
    Regular Price $21.99 Special Price $19.99 $1.00
    Add to Wish List Add to Compare
  6. Sellier & Bellot 300 AAC Blackout 200gr FMJ Sub-Sonic Ammunition 20rds - SB300BLKSUBA

    Sellier & Bellot 300 AAC Blackout 200gr FMJ Sub-Sonic Ammunition 20rds - SB300BLKSUBA

    Rating:
    96%
    (22)
    $21.99 $1.10
    Add to Wish List Add to Compare
  7. Remington UMC Freedom Bucket 150 gr FMJ 300 Blackout Ammunition, 160 Rounds

    Remington UMC Freedom Bucket 150 gr FMJ 300 Blackout Ammunition, 160 Rounds - L300AAC2BC

    Rating:
    100%
    (1)
    Regular Price $219.99 Special Price $179.99 $1.12
    Add to Wish List Add to Compare
  8. Fiocchi Hyperformance .300 Blackout 125gr SST Ammo, 25 rd - 300BLKHA

    Fiocchi Hyperformance .300 Blackout 125gr SST Ammo, 25 rd - 300BLKHA

    Rating:
    98%
    (19)
    Regular Price $31.99 Special Price $28.99 $1.16
    Add to Wish List Add to Compare
  9. .300 AAC Ammo Rifle

    Hornady Frontier .300 Blackout 125 gr FMJ Ammunition, 20 Rounds - FR400

    Rating:
    89%
    (7)
    $23.99 $1.20
    Add to Wish List Add to Compare
  10. Remington UMC 150 gr FMJ 300 Blackout Ammunition, 200 Rounds

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

    $247.99 $1.24
    Add to Wish List Add to Compare
  11. HSM Ammunition Varmint .300 AAC Blackout 110 gr PT 20rds

    HSM Ammunition Varmint .300 AAC Blackout 110 gr PT 20rds

    Regular Price $27.99 Special Price $24.89 $1.24
    Add to Wish List Add to Compare
  12. 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 $28.99 Special Price $25.39 $1.27
    Add to Wish List Add to Compare
  13. .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:
    87%
    (9)
    Regular Price $28.99 Special Price $25.59 $1.28
    Add to Wish List Add to Compare
  14. Hornady Frontier .300 Blackout Subsonic 208 Grain FMJ Ammo, 20Rds - FR410

    Hornady Frontier .300 Blackout Subsonic 208 Grain FMJ Ammo, 20Rds - FR410

    Rating:
    100%
    (1)
    $26.99 $1.35
    Add to Wish List Add to Compare
  15. 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:
    100%
    (2)
    Regular Price $31.99 Special Price $27.99 $1.40
    Add to Wish List Add to Compare
  16. Wilson Combat .300 AAC Blackout 110 gr V-Max PTFB 20rds - A300BLK110VMAX

    Wilson Combat .300 AAC Blackout 110 gr V-Max PTFB 20rds - A300BLK110VMAX

    Regular Price $31.99 Special Price $27.99 $1.40
    Add to Wish List Add to Compare
  17. Hornady 300 AAC Blackout 125gr HP American Gunner Rifle Ammunition, 50 Round Box - 80897

    Hornady 300 AAC Blackout 125gr HP American Gunner Rifle Ammunition, 50 Round Box - 80897

    Rating:
    96%
    (5)
    Regular Price $76.99 Special Price $69.99 $1.40
    Add to Wish List Add to Compare
  18. Winchester Deer Season XP 300 AAC Blackout

    Winchester Deer Season XP 300 AAC Blackout 150gr Ammo, 20 Round Box - X300BLKDS

    Rating:
    99%
    (18)
    Regular Price $31.99 Special Price $28.09 $1.40
    Add to Wish List Add to Compare
  19. 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

    Rating:
    100%
    (13)
    Regular Price $32.99 Special Price $29.69 $1.48
    Add to Wish List Add to Compare
  20. Remington UMC 300 AAC Blackout 220gr OTFB Ammunition 20rds - L300AAC4

    Remington UMC 300 AAC Blackout 220gr OTFB Ammunition 20rds - L300AAC4

    Rating:
    93%
    (6)
    $29.99 $1.50
    Add to Wish List Add to Compare
  21. Norma Range & Training .300 AAC Blackout 220 gr FMJ 20rds

    Norma Range & Training .300 AAC Blackout 220 gr FMJ 20rds

    Rating:
    60%
    (2)
    Regular Price $32.99 Special Price $29.99 $1.50
    Add to Wish List Add to Compare
  22. Remington UMC 220 gr Open Tip Flat Base .300 Blackout Ammo, 50/box - L300AAC4V

    Remington UMC 220 gr Open Tip Flat Base .300 Blackout Ammo, 50/box - L300AAC4V

    Regular Price $85.99 Special Price $76.99 $1.54
    Add to Wish List Add to Compare
  23. Remington Subsonic 220 gr OTFB .300 Blackout Rifle Ammo, 20/box - 28430

    Remington Subsonic 220 gr OTFB .300 Blackout Rifle Ammo, 20/box - 28430

    Rating:
    90%
    (2)
    $30.99 $1.55
    Add to Wish List Add to Compare
  24. Hornady Black 300 AAC Blackout 208Gr A-MAX Subsonic Centerfire Rifle Ammunition 20rds

    Hornady Black 208 Grain A-Max 300 Blackout Ammo 20rds - 80891

    Rating:
    96%
    (9)
    $31.99 $1.60
    Add to Wish List Add to Compare
View as Grid View List View

Items 1-24 of 166

Page
Set Descending Direction
Shop By
Shopping Options
Category
  1. 300 Blackout Subsonic Ammo 37
Stock
Clearance
Round Count
Grain Weight
Preferred Vendor
Brand
Price
Apply

Can't find your caliber?

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.