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

  • Item Number: 80877 BX
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  • Condition: NEW
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Product Description

Hornady® 300 Blackout Subsonic Ammunition is designed for accuracy and performance below the speed of sound. The new 190 gr Sub-X™ (Subsonic - eXpanding) bullet features a lead core. Long grooves in its gilding metal jacket combine with the bullet’s flat profile and the patented Flex Tip® insert within its hollowpoint cavity to help it expand reliably at low velocities.

Performance of the Hornady® 300 Blackout Subsonic load meets or exceeds FBI Protocol terminal ballistic test requirements.

Product Features

  • Sub-X Bullet Technology:In addition to its patented Flex Tip®, long grooves in the gilding metal jacket of the 190 gr Sub-X™ combine with the bullet’s flat profile to ensure expansion. The Sub-X™ features a lead core and a cannelure for a positive case crimp for use in semi-automatics.
  • Proven Performance:Performance of 300 Blackout Subsonic meets or exceeds FBI Protocol terminal ballistic test requirements. Impact velocity of 1,020 fps into ballistic gelatin provides 16-18” penetration and 90%+ weight retention.
  • Silent and Stealthy: Hornady® Subsonic Ammunition doesn’t have the loud report of a supersonic round, and paired with a suppressor, it’s even quieter. Unique powders optimized for subsonic use result in a low flash signature, ideal for either suppressed or unsuppressed performance.

Ammo Specifications

  • Caliber: 300 Blackout
  • Bullet Weight: 190 gr
  • Product Line: Subsonic
  • Bullet Type: Sub-x
  • Muzzle Velocity: 1050 fps
  • Muzzle Energy: 465 ft/lb
  • Quantity: 20 rounds per box

Customer Comments & Questions

Customer Reviews

(5 out of 5) Flawless and accurate so far
by from La Crosse, WI on

I run this through a Seekins NXP8 pistol and a Ruger American Ranch Rifle bolt action, both suppressed. This round cycles the pistol perfectly and is accurate with both guns. I have yet to see how it works on deer but if it expands properly, it will be my go-to for sub-100 yard deer hunting and home defense.
 Interestingly, the NXP8 eats everything except the Hornady 208 grain A-Max. Won't feed it properly no matter what I do. I was hopeful this 190 grain round wouldn't have the same issues, and, thankfully, it does not.

(1 out of 5) Not up to Hornady specs
by from Joliet, IL on

This stuff is awful. Every 2nd or 3rd round hangs up. Just go to Youtube and watch any of the test fire videos for it. I looked it up AFTER I bought 300 rounds. Dang it. It doesn't cycle correctly, the short wide soft tip hangs up on feed ramp.
 It's the only ammo I've had an issue with in my AR pistol. Everything else shoots fine, it is not the weapon. In one video the guy adds a flaming pig and it works better, not perfect. I have an FP muzzle device, it makes very little difference.