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Hornady 80877 Subsonic 300 AAC BlackoutWhisper/ 7.62x35mm 190 GR SubX 20 Rounds
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SKU: 80877-090255808773
Overview
Built for subsonic use, this ammunition is intended for hunters and shooters who want controlled performance in a 300 Blackout platform. The 190-grain Sub-X bullet is described as expanding reliably at low velocities, making it suited to applications where staying below the speed of sound is part of the plan. Brass casing and Hornady’s Sub-X design round out a load focused on consistency rather than high-speed output. It is packaged in 20-round boxes, which makes it practical for range work, load evaluation, or field use where subsonic performance is preferred.
Why Hunters Choose the Hornady
Subsonic 300
Blackout load designed for shooting
190-grain Sub-x
Patented Flex Tip insert
Bullet Design
Supports expansion at low velocities
Brass Casing
Included in a 20-round box
Listed Muzzle
Velocity of 1050 fps and
Key Features
- Subsonic 300 AAC Blackout / Whisper ammunition for use below the speed of sound.
- 190-grain Sub-X bullet designed for low-velocity expansion.
- Patented Flex Tip insert supports consistent bullet expansion.
- Long grooves in the gilding metal jacket aid the bullet design.
- Brass-cased ammunition; 20 rounds per box.
- Listed muzzle velocity is 1050 fps with 465 ft-lbs of muzzle energy.
Best Used For
- Hunters using subsonic 300 Blackout loads for controlled shooting at lower velocities
- Shooters wanting a 190-grain Sub-X round with listed muzzle energy and velocity
- Range users focused on 300 AAC Blackout/Whisper ammunition in 20-round boxes
- Those seeking brass-cased ammunition for repeatable use in compatible firearms
Specifications
| Bullet Profile | Flat profile |
|---|---|
| Bullet Type | Sub-X |
| Bullet Weight | 190 gr |
| Caliber | 300 Blackout |
| Casing Material | Brass |
| Flex Tip Insert | Patented Flex Tip insert |
| Jacket Material | Gilding metal |
| Muzzle Energy | 465 ft lbs |
| Muzzle Velocity | 1050 fps |
| Rounds Per Box | 20 |
| Subsonic | Yes |
Pros
- Subsonic 300 Blackout load designed for shooting below the speed of sound
- 190-grain Sub-X bullet with patented Flex Tip insert
- Bullet design supports expansion at low velocities
- Brass casing included in a 20-round box
- Listed muzzle velocity of 1050 fps and muzzle energy of 465 ft lbs
Considerations & Trade-offs
- Subsonic performance means this load is intended for use below the speed of sound, so it is not a general-purpose high-velocity option.
- The 20-round box count is relatively limited, which may require more frequent restocking for range use or practice.
- The 190-grain Sub-X bullet is purpose-built for this specific application, so it is a more specialized choice than standard 300 Blackout loads.
- Muzzle velocity and energy are listed for this load, but real-world results will depend on the firearm and setup used.
Suggested Comparisons
- Subsonic rifle ammunition
- 300 AAC Blackout ammunition
- Hunting bullets and loads
- Centerfire rifle ammunition
Suggested Accessories
- Ammunition storage box
- Hearing protection
- Cleaning kit
- Magazine
Frequently Asked Questions
What caliber is this Hornady ammunition chambered in?
It is listed as 300 Blackout Whisper / 7.62x35mm, with the caliber specified in the product details as 300 Blackout.
Is this load subsonic?
Yes. The product description says it is designed for accuracy and performance below the speed of sound, and the listed muzzle velocity is 1050 fps.
What bullet does this ammunition use?
It uses a 190-grain Sub-X bullet.
How many rounds come in a box?
There are 20 rounds per box.
What performance figures are provided for this load?
The provided specifications list 1050 fps muzzle velocity and 465 ft lbs muzzle energy.