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Questions & Answers
What is the muzzle velocity of this ammo feet per second? Expert Answer

Muzzle velocity is 1050

by Ryan Tarczynski, Gear Expert, February 11, 2021
Is this round good for self defense Expert Answer

I would recommend emailing us at techsales@opticsplanet.com to help you further.

by Ryan Tarczynski, Gear Expert, February 11, 2021
Customer Reviews
Helpful Positive Review Silent and Deadly by Joe Bob, Verified Owner, December 14, 2024
Great round for subsonic shooting with a suppressor. Very quiet and low recoil. Zeroed at 100 yards. Hornady never disappoints.
1/1 found this helpful
Helpful Positive Review accurate and made for serious danage by Paul Munsch, Verified Owner, July 8, 2024
Every gun likes different ammo so you need to find what works for you. But this ammo shoots out of my Ruger American ranch very well. With a suppressor it’s very quite and will do the job needed for 150-200 yards
1/2 found this helpful
Helpful Positive Review Excellent subsonic hunting ammo by JE, Verified Owner, September 20, 2024
I love this subsonic ammo. I’ve killed a ton of pigs with this .300 blkout Hornady ammo with my suppressed Ruger bolt action rifle at 100 yards and closer. Most of the time with the right shot placement, they drop in there tracks and yes most of my s...
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1/1 found this helpful
Helpful Positive Review As advertised by BrianT, Verified Owner, November 18, 2023
Averaged 1000fps out of my 10" barrel, suppressed or unsuppressed, @45*F. Did not feed the next rounds unsuppressed, but did get bolt lockback. Suppressed they run flawlessly.
3/3 found this helpful
Helpful Negative Review Feeding Issues by kc, Verified Owner, March 29, 2025
Had many feeding issues with this round in multiple gas guns with multiple brands of magazines. I believe the flat nose of the projectile and its short length is to blame. Might be good for a bolt gun but would definitely not trust it for self defens...
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1/1 found this helpful
Most Recent Reviews Hornady Subsonic 300 AAC Blackout 190 Grain Subsonic by Joe, Verified Owner, September 13, 2025
Hornady Subsonic .300 AAC Blackout 190 Grain Subsonic shoots .5 MOA with my 300 BO at 100 yrds. It’s amazing how quiet it is. Going to use for hog hunting. Will definitely purchase again.
Read All 19 Reviews
HORNADY15
Up to 8% Off Ammo

A 15% off TREAT with SPOOKY Savings from Hornady!

HORNADY15Click to Copy Coupon Code
Eligible models will have a savings offer and the coupon code to use below. Add the item to your cart and enter coupon code for savings on that select model! Limited time only. Cannot be combined with other promotions or offers.
Number of Rounds: 20

Code: 0H-LAR-80877

MPN: 80877

UPC: 090255808773

List: $36.89Save 23%
$1.42/Round
$28.49

Please note: For safety reasons, OpticsPlanet is not able to accept returns of ammunition for any reason, and no refunds will be issued for any returned ammunition.

Product Info for Hornady Subsonic .300 AAC Blackout 190 Grain Subsonic eXpanding Centerfire Rifle Ammunition

Silent yet powerful Hornady Subsonic .300 AAC Blackout 190 grain Sub-X Centerfire Rifle Ammunition lets your efficiency do all the talking. This 300 Blackout Ammo from the professionals at Hornady features special powders that deliver a low flash signature, and when combined with a silencer, this ammunition provides maximum stealth for sneaky hunts. Hornady Subsonic .300 AAC Blackout 190gr Sub-X Centerfire Rifle Ammo is designed with the patented Flex Tip insert within its hollow point cavity for reliable expansion even at lower velocities. If you need the quietest firepower possible for sneaking up on game, arm yourself with some dependable Hornady 300 Blackout 190gr Sub-X Subsonic Rifle Ammunition - 20 Rounds.image

Buy Hornady ammo to get bullets that are accurate, consistent, and always dependable.

WARNING: California`s Proposition 65

Specifications for Hornady Subsonic .300 AAC Blackout 190 Grain Subsonic eXpanding Centerfire Rifle Ammunition:

Manufacturer: Hornady
Caliber: .300 AAC Blackout
Number of Rounds: 20
Bullet Type: Subsonic eXpanding (Sub-X)
Bullet Weight: 190 grain
Cartridge Case Material: Brass
Muzzle Velocity: 1050 ft/s
Muzzle Energy: 465 ft-lbs
Application: Medium Game, Self-Defense
Package Type: Box
Primer Style: Centerfire
Sectional Density: 0.286
G1 Ballistic Coefficient: 0.437
Weight: 190 grain

Features of Hornady Subsonic .300 AAC Blackout 190 Grain Subsonic eXpanding Centerfire Rifle Ammunition:

  • Proven Performance: Performance of 300 Blackout Subsonic meets or exceeds FBI Protocol terminal ballistic test requirements. The XTP bullet in Subsonic Handgun has built a world-class reputation for accuracy and stopping power.
  • 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.
  • High-Quality Components: With high-quality cartridge cases and primers, Subsonic Ammunition offers the performance and accuracy shooters have come to expect from Hornady.

Package Contents:

  • Hornady Subsonic .300 AAC Blackout 190 Grain Subsonic eXpanding Centerfire Rifle Ammunition

Hornady Subsonic .300 AAC Blackout 190 Grain Subsonic eXpanding Centerfire Rifle Ammunition Orderable Models

List of Orderable Models

Hornady Subsonic .300 AAC Blackout 190 grain Subsonic eXpanding Brass Cased Centerfire Rifle Ammo, 20 Rounds, 80877 , MPN: 80877 , UPC: 090255808773 , Code: 0H-LAR-80877

Hornady Subsonic .300 AAC Blackout 190 Grain Subsonic eXpanding Centerfire Rifle Ammunition Unavailable & Discontinued Models

List of Unorderable Models

Hornady Subsonic .300 AAC Blackout 190 grain Subsonic eXpanding Brass Cased Centerfire Rifle Ammo , MPN: 80877-KIT1 , Code: 0H-LAR-80877-80877-KIT1
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