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300 AAC BLACKOUT

The 300 AAC Blackout (aka 300 Blackout, 300 BLK, or 7.62x35mm) was developed for the M4 carbine by Advanced Armament Corporation. It was conceived as a more versatile and powerful round than the 5.56x45 that would not require the United States Armed Forces to purchase new rifles – or even new magazines. It was not officially adopted, but the commercial market has embraced the 300 BLK. Choose a 200+ grain bullet for the subsonic muzzle velocity required for optimal suppressor performance.
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21 - 37 of 37

  1. 50rds - 300 AAC Blackout Magtech First Defense 123gr. FMJ Ammo 50rds - 300 AAC Blackout Magtech First Defense 123gr. FMJ Ammo
    $49.95
    $1/ppr

    186 In Stock

    Bullet type
    Full Metal Jacket (FMJ)     Muzzle Energy
    1359     Casing Type
    Brass     Muzzle Velocity
    2230     Primer Type
    Boxer     Bullet Weight
    123 Grain
    Ballistic Data Available
  2. 20rds – 300 AAC Blackout Ammo Inc. Hunt 150gr. SP Ammo 20rds – 300 AAC Blackout Ammo Inc. Hunt 150gr. SP Ammo
    $20.95
    $1.05/ppr

    148 In Stock

    Bullet type
    Soft-Point Boat Tail (SP-BT)     Muzzle Energy
    1140     Casing Type
    Brass     Muzzle Velocity
    1850     Primer Type
    Boxer     Bullet Weight
    150 Grain
  3. 500rds – 300 AAC Blackout Federal American Eagle 220gr. OTM Subsonic Ammo 500rds – 300 AAC Blackout Federal American Eagle 220gr. OTM Subsonic Ammo

    $594.95

    $529.95

    $1.06/ppr

    27 In Stock

    Bullet type
    Open Tip Match     Muzzle Energy
    488     Casing Type
    Brass     Muzzle Velocity
    1000     Primer Type
    Boxer     Bullet Weight
    220 Grain
    Ballistic Data Available
  4. 20rds – 300 AAC Blackout Federal American Eagle Suppressor Subsonic 220gr. OTM Ammo 20rds – 300 AAC Blackout Federal American Eagle Suppressor Subsonic 220gr. OTM Ammo
    $24.45
    $1.22/ppr

    ☆☆☆☆☆ 1 Review

    157 In Stock

    ☆☆☆☆☆ 1 Review

    Bullet type
    Open Tip Match     Muzzle Energy
    488     Casing Type
    Brass     Muzzle Velocity
    1000     Primer Type
    Boxer     Bullet Weight
    220 Grain
    Ballistic Data Available
  5. 20rds – 300 AAC Blackout Hornady Frontier 125gr. FMJ Ammo 20rds – 300 AAC Blackout Hornady Frontier 125gr. FMJ Ammo
    $24.95
    $1.25/ppr

    132 In Stock

    Bullet type
    Full Metal Jacket (FMJ)     Muzzle Energy
    1313     Casing Type
    Brass     Muzzle Velocity
    2175     Primer Type
    Boxer     Bullet Weight
    125 Grain
  6. 20rds – 300 AAC Blackout Underwood 110gr. Polymer Tip Ammo 20rds – 300 AAC Blackout Underwood 110gr. Polymer Tip Ammo
    $27.95
    $1.4/ppr

    98 In Stock

    Bullet type
    Polymer Tipped     Muzzle Energy
    1407     Casing Type
    Nickel-Plated Brass     Muzzle Velocity
    2400     Primer Type
    Boxer     Bullet Weight
    110 Grain
  7. 200rds - 300 AAC Blackout Hornady Subsonic 190gr. Sub-X Ammo 200rds - 300 AAC Blackout Hornady Subsonic 190gr. Sub-X Ammo
    $284.95
    $1.42/ppr

    ☆☆☆☆☆ 1 Review

    44 In Stock

    ☆☆☆☆☆ 1 Review

    Bullet type
    Polymer Tipped     Muzzle Energy
    465     Casing Type
    Brass     Muzzle Velocity
    1050     Primer Type
    Boxer     Bullet Weight
    190 Grain
    Ballistic Data Available
  8. 20rds – 300 AAC Blackout Hornady BLACK 110gr. V-MAX Ammo 20rds – 300 AAC Blackout Hornady BLACK 110gr. V-MAX Ammo
    $28.95
    $1.45/ppr

    56 In Stock

    Bullet type
    V-MAX     Muzzle Energy
    1377     Casing Type
    Brass     Muzzle Velocity
    2375     Primer Type
    Boxer     Bullet Weight
    110 Grain
  9. 200rds – 300 AAC Blackout Hornady BLACK 208gr. A-MAX Ammo 200rds – 300 AAC Blackout Hornady BLACK 208gr. A-MAX Ammo
    $289.95
    $1.45/ppr

    28 In Stock

    Bullet type
    Polymer Tipped     Muzzle Energy
    480     Casing Type
    Brass     Muzzle Velocity
    1020     Primer Type
    Boxer     Bullet Weight
    208 Grain
    Ballistic Data Available
  10. 20rds - 300 AAC Blackout Hornady Subsonic 190gr. Sub-X Polymer Tip Ammo 20rds - 300 AAC Blackout Hornady Subsonic 190gr. Sub-X Polymer Tip Ammo
    $29.95
    $1.5/ppr

    158 In Stock

    Bullet type
    Polymer Tipped     Muzzle Energy
    465     Casing Type
    Brass     Muzzle Velocity
    1050     Primer Type
    Boxer     Bullet Weight
    190 Grain
    Ballistic Data Available
  11. 200rds – 300 AAC Blackout Hornady Custom 135gr. FTX Ammo 200rds – 300 AAC Blackout Hornady Custom 135gr. FTX Ammo
    $299.95
    $1.5/ppr

    7 In Stock

    Bullet type
    Flex Tip (FTX)     Muzzle Energy
    1303     Casing Type
    Brass     Muzzle Velocity
    2085     Primer Type
    Boxer     Bullet Weight
    135 Grain
    Ballistic Data Available
  12. 200rds – 300 AAC Blackout Barnes Precision Match 125gr. OTM BT Ammo 200rds – 300 AAC Blackout Barnes Precision Match 125gr. OTM BT Ammo
    $299.95
    $1.5/ppr

    3 In Stock

    Bullet type
    Open Tip Match     Muzzle Energy
    1362     Casing Type
    Brass     Muzzle Velocity
    2215     Primer Type
    Boxer     Bullet Weight
    125 Grain
  13. 20rds - 300 AAC BLACKOUT Hornady Black 208gr. A-Max Ammo 20rds - 300 AAC BLACKOUT Hornady Black 208gr. A-Max Ammo
    $30.95
    $1.55/ppr

    50 In Stock

    Bullet type
    A-MAX     Muzzle Energy
    480     Casing Type
    Brass     Muzzle Velocity
    1020     Primer Type
    Boxer     Bullet Weight
    208 Grain
    Ballistic Data Available
  14. 20rds – 300 AAC BLACKOUT Hornady 135gr. FTX Ammo 20rds – 300 AAC BLACKOUT Hornady 135gr. FTX Ammo
    $31.95
    $1.6/ppr

    ☆☆☆☆☆ 1 Review

    27 In Stock

    ☆☆☆☆☆ 1 Review

    Bullet type
    Flex Tip (FTX)     Muzzle Energy
    1303     Casing Type
    Brass     Muzzle Velocity
    2085     Primer Type
    Boxer     Bullet Weight
    135 Grain
    Ballistic Data Available
  15. 20rds – 300 AAC Blackout Hornady BLACK 110gr. NTX Ammo 20rds – 300 AAC Blackout Hornady BLACK 110gr. NTX Ammo
    $31.95
    $1.6/ppr

    102 In Stock

    Bullet type
    NTX     Muzzle Energy
    1047     Casing Type
    Brass     Muzzle Velocity
    2070     Primer Type
    Boxer     Bullet Weight
    110 Grain
  16. 20rds – 300 AAC Blackout Black Hills 125gr. Sierra TMK Ammo 20rds – 300 AAC Blackout Black Hills 125gr. Sierra TMK Ammo
    $32.95
    $1.65/ppr

    139 In Stock

    Bullet type
    Polymer Tipped     Muzzle Energy
    1343     Casing Type
    Brass     Muzzle Velocity
    2200     Primer Type
    Boxer     Bullet Weight
    125 Grain
  17. 20rds – 300 AAC Blackout Underwood 115gr. Controlled Chaos Ammo 20rds – 300 AAC Blackout Underwood 115gr. Controlled Chaos Ammo
    $39.95
    $2/ppr

    98 In Stock

    Bullet type
    Solid Copper Hollow Point (SCHP)     Muzzle Energy
    1422     Casing Type
    Nickel-Plated Brass     Muzzle Velocity
    2360     Primer Type
    Boxer     Bullet Weight
    115 Grain

21 - 37 of 37

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300 BLK - Common Questions

Where Does “BLK” Come From?

The name “BLK” is simply an abbreviation of the term “Blackout.” The full name of the cartridge is “.300 BLK” by the Sporting Arms and Ammunition Manufacturers' Institute, but the primary manufacturer calls it the .300 AAC Blackout. You will also see it called the 7.62×35mm by some circles, particularly military-centric groups.

What Types of Firearms Load the .300 BLK?

Similar to the most rifle cartridges created in the past 100 years, the .300 BLK was created for semiautomatic weapons. While there are other types of rifles that can load this cartridge, the vast majority are “AR-style” weapons. It is known as a “carbine cartridge,” meaning it is generally meant for short-barreled rifles.

Is the .300 BLK Interchangeable with the .308 Winchester?

No. These are two different cartridges that are not interchangeable at all. While they have the same bullet diameter (.308 inches), the biggest difference is the length. .308 Remington ammunition is longer in both case and overall length, meaning it has a larger capacity for propellant, which results in superior speed and power. While the .300 BLK is not a slow round, the .308 Winchester generally has muzzle velocities around 2,500 to 3,000 feet per second, while the .300 BLK has speeds around 2,000 to 2,500 feet per second.

How Does the .300 BLK Compare to the .223 Remington?

These are both high-volume cartridges meant for semiautomatic weapons, both have a foundation in military purposes, and both are associated with “AR” style rifles, so a comparison is warranted. However, the differences are vast. The .300 BLK has a larger bullet, with grain sizes as high as 200 or more; the standard bullet size for 223 Rem ammo is 55 grains. The .223 generally has faster velocities, consistently reaching above 3,000 feet per second, while the .300 BLK tends to deliver slightly better muzzle energy.

Can You Hunt with the .300 BLK?

Yes. The .300 BLK is a recent cartridge, and it often takes time for cartridges to work their way into hunting circles. However, the cartridge has many attributes that make it ideal for medium-sized game hunting, including whitetail deer. First, it’s a .308-caliber cartridge, which is one of the most popular sizes for deer hunting. It also has supersonic loads available, which give hunters greater speeds. From a ballistics perspective, it’s very similar to the .30-30 Winchester, which is used for deer hunting in short-range situations. If you want a rifle that can give you enjoyable high-volume target shooting, as well as medium-range hunting capabilities, a weapon that loads the .300 BLK is a fine choice. For hunting, choose expanding rounds such as jacketed hollow points; for target shooting, choose FMJ for better internal performance and affordability.

Recent 300 AAC BLACKOUT Reviews