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Ammo Inc subsonic 300 Blackout ammunition loaded with 220 grain projectiles, built for suppressed rifles and hunting applications requiring reduced noise.
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Product Description
Ammo Inc 300 Blackout 220 grain subsonic ammunition is engineered to stay below the speed of sound when fired from .300 Blackout rifles. Each box contains 20 rounds designed for suppressed shooting and applications where noise reduction matters.
This subsonic load eliminates the supersonic crack that standard ammunition produces. When paired with a suppressor, it delivers significantly quieter operation than high-velocity rounds.
The heavier 220 grain bullet maintains energy at subsonic velocities, making it effective for hunting and defensive use at closer ranges. It cycles reliably in AR-15 platform rifles chambered in .300 Blackout.
Key Facts
- Caliber: .300 Blackout
- Bullet Type: Subsonic
- Grain Weight: 220 Grain
- Quantity: 20 Rounds Per Box
- SKU: AMI300B220TMC
Why 220 Grain 300 Blackout Subsonic Ammo
Subsonic ammunition travels slower than approximately 1,125 feet per second, depending on altitude and temperature. That slower speed prevents the projectile from breaking the sound barrier and creating the sharp crack heard with standard ammunition.
The 220 grain weight is heavier than typical supersonic .300 Blackout loads, which usually run between 110 and 125 grains. That extra mass compensates for the lower velocity, delivering adequate terminal performance for hunting hogs, whitetail deer at woods distances, and home defense scenarios.
Subsonic loads shine when used with a suppressor. The combination reduces report to hearing-safe or near hearing-safe levels in many cases, though ear protection remains advisable. Without a suppressor, subsonic ammunition is still noticeably quieter than supersonic rounds but offers no hearing protection on its own.
Ammo Inc 300 Blackout Subsonic Performance
The .300 Blackout cartridge was developed specifically to offer subsonic capability in the AR-15 platform without requiring a magazine or bolt change. Standard 5.56 NATO magazines and bolts work with .300 Blackout, though a barrel swap is necessary.
Subsonic .300 Blackout typically cycles semi-automatic rifles reliably because the cartridge was designed with suppressed, subsonic use in mind. The wider case and heavier bullets generate enough gas pressure to operate the action even at reduced velocities.
This ammunition suits shooters who already own a suppressor or plan to add one, hunters working in areas where noise discipline matters, and anyone building or running a dedicated subsonic .300 Blackout rifle. It pairs well with barrels between 8 and 16 inches, though shorter barrels sacrifice less velocity with subsonic loads than they do with supersonic ammunition.
Buying from Western Sport in Roanoke, TX
Western Sport is a licensed FFL/SOT dealer serving the North Texas and DFW area since 2007. Our Roanoke location offers gunsmithing services, transfers, and a full selection of ammunition for rifles, handguns, and shotguns.
Call 817-393-4000 to check current availability, place an order, or ask owner and gunsmith Lance Rankin any technical questions about subsonic loads, suppressor compatibility, or rifle setup.
Frequently Asked Questions
Q: What makes Ammo Inc 300 Blackout 220 grain ammunition subsonic?
A: The 220 grain bullet weight and powder charge are engineered to keep the projectile traveling below the speed of sound, eliminating the supersonic crack. This makes the ammunition significantly quieter, especially when fired through a suppressor.
Q: Will 220 grain 300 Blackout subsonic ammo cycle my AR-15?
A: Subsonic .300 Blackout generally cycles AR-15 rifles reliably because the cartridge was designed for subsonic use in that platform. If you experience cycling issues, an adjustable gas block or suppressor can help increase back pressure and improve function.
Q: Does subsonic 300 Blackout need a suppressor to be effective?
A: No, subsonic .300 Blackout functions and delivers terminal performance without a suppressor. However, the noise reduction benefit is most noticeable when a suppressor is used, as it eliminates both the supersonic crack and much of the muzzle blast.
Q: How does Ammo Inc subsonic compare to supersonic 300 Blackout loads?
A: Subsonic loads are quieter and produce less felt recoil but have a more pronounced bullet drop and reduced effective range compared to supersonic ammunition. Supersonic loads offer flatter trajectories and higher energy at distance, while subsonic rounds excel in suppressed applications and close-range work.
Q: What is the effective range of 220 grain subsonic 300 Blackout?
A: Call 817-393-4000 to confirm ballistic specifications for this load. Generally, subsonic .300 Blackout is considered effective for hunting and defensive use inside 150 yards, though most shooters limit subsonic applications to 100 yards or less due to trajectory drop.
Q: Can I order Ammo Inc 300 Blackout subsonic ammunition from Western Sport?
A: Yes, Western Sport can order or transfer ammunition and firearms for customers in the DFW and North Texas area. Call 817-393-4000 to place an order, discuss shipping options to our Roanoke FFL, or arrange pickup.
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