Out of stock
Atomic Ammunition Subsonic 260 gr Round Nose Soft Point Boat Tail MatchKing .300 Blackout Ammo, 20/box - 478
Out of stock

Atomic Ammunition Subsonic 260 gr Round Nose Soft Point Boat Tail MatchKing .300 Blackout Ammo, 20/box - 478

SKU 785793
Brand Atomic
Model Number 00478
UPC 858767004782
Price Per Round $1.20
Customers must read Compliance Information before purchasing.
This product is fulfilled by a PSA Partner and shipping times may vary.

Product Details


  • Series/Collection: Subsonic
  • Bullet Style: Round Nose Soft Point Boat Tail MatchKing
  • Caliber/Gauge: 300 AAC Blackout
  • Bullet Weight: 260 grain
  • Muzzle Energy: 637 lb/ft
  • Muzzle Velocity: 1050 fps
  • Case Material: Brass
  • Application: Medium Game
  • Packaging Quantity: 20/Box


Atomic Ammunition's 300 Blackout 260 grain Sierra HPBT match king loaded in new brass is made with only the very best components available, such as new, reloadable brass cases, Hodgdon powder and Sierra's world famous matchking round nose soft point boat tail bullets. Atomic Ammunition's newest product, our 300 Blackout is unlike most high powered rifle ammunition. It is quieter, has less felt recoil, produces more energy and power as many 0.45 ACP+P police and military service rounds yet delivers excellent accuracy past 100 yd from rifles with barrel twist rates of 1 in 8 in or faster. This specialty ammunition is perfect for indoor shooting ranges that do not allow high powered rifles because of the noise they generate that echoes off of the walls or fear that the bullet will generate so much power that it will pass through or tear up the backstop. It can be fired on smaller plots of land that are safe for firing handguns but where a miss with a rifle bullet would likely travel beyond the property, or the use of a full powered rifle load would disturb nearby neighbours. It is a perfect round for ranchers to dispatch varmints and predators such as coyotes or bobcats that prey on young calves and small livestock, with a reduced chance of scaring larger animals into a stampede. Atomic's 300 Blackout Subsonic is quickly growing in popularity with military and law enforcement tactical professionals as well as civilians in over 35 states to use with suppressed firearms because the bullet does not reach or exceed the speed of sound and does not create a loud sonic boom as it travels. This relatively innocuous cartridge, with its low recoil and report compared to full powered 7.62 and 30-06 loads will serve many shooters, new or experienced, young and old with an alternative target and varmint round to the loud, harsher kicking standard 30 caliber cartridges and this match grade Subsonic has an MSRP on par with standard 300 Blackout ammunition, not the higher price commonly associated with our competitors inferior 300 Blackout ammo.


    This ammunition is not specifically designed to cycle semi or fully automatic weapons
    Sub-minute of angle accuracy in high quality rifles with capable users


Q & A


If you live in AK, CA, CT, DC, HI, IL, MA, MD, NJ, or NY, please read our ammo shipping restrictions before placing your order.
You must be 18 years or older to purchase rifle ammunition.
You must be 21 years or older to purchase handgun ammunition.
All California ammunition orders need to be shipped to an FFL and will be charged a 25% restocking Fee. More CA Info
Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).