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300 Blackout 190 Grain Sub-X Subsonic Rifle Ammunition, Box of 20

SKU: HOM-80877
UPC: 90255808773
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300 Blackout 190 Grain Sub-X Subsonic Rifle Ammunition, Box of 20

Hornady Subsonic Ammunition — designed for accuracy and performance below the speed of sound — now comes in both rifle and handgun loads.

Subsonic Handgun utilizes tried-and-true XTP bullets that expand reliably at subsonic velocities. The Sub-X bullet used in Subsonic Rifle 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.

Powders are selected for optimal performance and consistency from lot to lot.

Hornady 300 Blackout 190 Grain Sub-X Subsonic Rifle Ammunition


  • CARTRIDGE: 300 Blackout
  • BULLET: 190 gr Sub-X
  • PRODUCT LINE: Subsonic

Product Features


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.


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.


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.



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Please review the Rogers Sporting Goods Ammunition Sales Policies and Regulations.

300 Blackout 190 Grain Sub-X Subsonic Rifle Ammunition, Box of 20

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