.300 Blackout Ammo.
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.300 Blackout puts .30 caliber power into the AR-15 using standard magazines and a simple barrel swap. It shines in short barrels and with suppressors, offering both supersonic and quiet subsonic loads. At Gunners Outlet we carry .300 Blackout ammunition from 110 to 220 grains, including FMJ, hunting loads and subsonic rounds from Federal, Hornady, Remington, Sig Sauer and Winchester. Buy by the box or in bulk, and we ship fast from New Hampshire. Each product lists its price per round, so comparing value is simple.
Choosing .300 Blackout Ammunition
Advanced Armament Corporation developed the .300 AAC Blackout, and SAAMI standardized it in 2011. It uses a shortened 5.56 case to hold a .30 caliber bullet, so an AR-15 only needs a new barrel to run it.
Supersonic loads around 110 to 125 grains perform similarly to 7.62x39 and are good for training, defense and hunting inside 200 yards. Subsonic loads around 200 to 220 grains stay below the speed of sound, which makes them extremely quiet through a suppressor.
Subsonic ammo needs a heavier bullet designed to expand at low velocity, so pick loads built for that purpose when hunting. Some pistols and short rifles also need a specific gas setting to cycle subsonics. For range work, buying .300 Blackout FMJ in bulk is the easiest way to save.
.300 Blackout for Hunting and Defense
Supersonic .300 Blackout with an expanding bullet is effective on deer and hogs inside about 200 yards, and its short-barrel performance makes it popular for compact home defense rifles. A 9 or 10 inch barrel delivers much of the cartridge's potential.
Always mark your magazines when you own both 5.56 and .300 Blackout rifles. A .300 Blackout round can chamber in a 5.56 rifle and cause a dangerous failure if fired.
.300 Blackout Ballistics Table
| Bullet Weight | Bullet Type | Loads | Brands | Price From |
|---|---|---|---|---|
| 120 gr | — | 2 | 2 | $0.95/rd |
| 123 gr | FMJ | 1 | 1 | $0.99/rd |
| 125 gr | FMJ, JHP / Hollow Point | 5 | 4 | $1.00/rd |
| 135 gr | — | 1 | 1 | $1.27/rd |
| 150 gr | FMJ, Soft Point | 4 | 3 | $1.00/rd |
| 200 gr | — | 1 | 1 | $1.00/rd |
| 220 gr | Subsonic | 3 | 3 | $1.30/rd |
Frequently Asked Questions
What is the best 300 blackout ammo?
The best .300 Blackout ammo depends on use: 110 to 125 grain supersonic for general use and hunting, and 200 to 220 grain subsonic for suppressed shooting. Choose a bullet designed for your velocity range.
What is the best subsonic 300 blackout ammo?
The best subsonic .300 Blackout ammo uses a 200 to 220 grain bullet designed to expand at low velocity for defense and hunting, or FMJ for quiet practice. Confirm it cycles reliably in your rifle.
300 blackout vs 556: which is better?
5.56 shoots flatter and is cheaper, while .300 Blackout hits harder at short range and runs much quieter suppressed. Choose 5.56 for distance, .300 Blackout for short barrels and suppressors.
300 blackout vs 308: which is better?
.308 Winchester is much more powerful and reaches far farther, while .300 Blackout fits the AR-15 and suppresses well. Choose .308 for big game at distance.