Commonwealth Ammunition loads this 300 Blackout subsonic ammo for one job: running quiet. The heavy 220 grain FMJ bullet stays below the speed of sound. As a result, a suppressed rifle loses the sharp supersonic crack.

Why Choose 300 Blackout Subsonic Ammo?

The .300 Blackout shines with a suppressor, and subsonic loads are the reason. Because the bullet never breaks the sound barrier, your rifle stays much quieter. At the same time, Commonwealth tunes this load to cycle standard semi-auto gas systems, including short barrels.

The heavy bullet also brings steady recoil and good stability. So you can run drills, zero your optic or take a suppressed carbine course with one load.

Clean Powder and New Brass

Commonwealth pairs clean-burning powder with new, Boxer-primed brass cases. Therefore, you get reliable feeding and less carbon in your rifle. The smooth FMJ profile also feeds well from standard .300 BLK and STANAG magazines.

In addition, the 50-round box gives you more rounds per box than a typical 20-round rifle pack. That means fewer boxes to carry and a lower cost per round.

Subsonic loads also make shooting more pleasant for everyone nearby. For instance, hearing safety improves on the line, and your neighbors notice less noise from your range sessions.

Specifications

• Brand: Commonwealth Ammunition
• Caliber: .300 AAC Blackout (7.62x35mm)
• Bullet: 220 grain FMJ, subsonic
• Case: New brass, Boxer primed, reloadable
• Quantity: 50 rounds

Common Questions

Will it cycle without a suppressor? Many rifles cycle heavy subsonic loads unsuppressed, but some short-stroke systems need the extra back pressure a suppressor adds. So test a few magazines in your rifle first.

Can I reload the brass? Yes. The new brass cases use Boxer primers, so you can reload them.

What rifles does it fit? It fits any firearm chambered in .300 AAC Blackout. Never fire it in a 5.56 or .223 rifle.

To learn more, visit Commonwealth Ammunition. You can also browse all of our rifle ammunition.