Hornady 300 Blackout 190gr Subsonic Sub-X - Box of 20

Manufactured by Hornady
SKU: H80877
MPN: H80877
Manufactured by Hornady
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The 300 AAC Blackout cartridge was designed for suppressed shooting at the range when making noise is undesirable. While some 300 BLK ammunition is supersonic and more capable of hunting, this caliber is best used with subsonic projectiles. However, the Hornady 300 blackout ammo utilizes a heavy 190gr Sub-X bullet to keep it from breaking the sound barrier while still providing efficient terminal ballistics. The subsonic expanding bullet is designed to expand at low velocities with its lead core, metal jacket with long grooves, and hollow point flex tip. The soft lead core combined with the long grooves allow the 300 AAC projectile to expand on impact while retaining 90% of its weight. The added benefit of the flex tip technology ensures this subsonic ammunition meets FBI terminal ballistic test requirements within 100 yards with a 16-inch barrel. The brass cases are designed with a positive crimp for reliable use in semi-automatic rifles or 300 BLK pistols. Hornady uses a unique powder optimized for subsonic use that has a low retort and flash signature, so you will still have a quieter experience even unsuppressed. If you are looking for reliable, quiet, and effective .30 caliber ammo, look no further than the Hornady .300 Blackout Sub-X cartridge.

  • 190 grain Sub-X projectile
  • Flex-tip expanding hollow point
  • Subsonic performance with efficient terminal ballistics
  • Flat bullet profile
  • Passes FBI terminal ballistics requirement
  • Perfect target or practice ammo for suppressor use
  • Low flash signature propellant
  • Reloadable brass cases
  • Reliable boxer primers
  • Compatible with standard 30-round AR-15 magazines
  • Low recoiling
  • Great for short barrel rifles
  • Hunting small to medium game and home defense

The FBI terminal ballistics test requires an impact velocity of 1,20 fps into ballistic gelatin with 16-18” of penetration and 90% weight retention. This 300 BLK ammunition provides 1050 fps at the muzzle with a 16” barrel and averages 998fps at 100 yards. This equals to 420 ft/lbs of energy at 100 yards. With a 16 inch barrel, this round will be most effective for hunting within 100 yards.

"Ten bullets through one hole" is the philosophy that brought Hornady Manufacturing from a two-man operation in 1949, to a world-leading innovator of bullet, ammunition, reloading tool and accessory design and manufacture today. The Hornady company has taken what they have learned over the years and put it to good use developing some of the industry’s best precision, hunting, and target rounds for all types of firearms owners and enthusiasts.
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Bullet TypeSub-X
Bullet Weight190 gr
Caliber Gauge300 Blackout
Muzzle Energy465 ft.-lbs.
Muzzle Velocity1050 fps

WARNING: Discharging firearms in poorly ventilated areas, cleaning firearms or handling ammunition may result in exposure to lead and other substances known to the State of California to cause birth defects, reproductive harm and other serious physical injury. Have adequate ventilation at all times. Wash hands thoroughly after exposures. For more information, see www.p65warnings.ca.gov

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