Hornady quietly launched an updated lineup of their Sub-X bullets, as well as their Subsonic 7.62x39 loading using said Sub-X bullets.
Hornady 175gr sub-x ballistics issue
First Look: Hornady Subsonic 7.6x39mm Ammo
300 Blackout vs 7.62x39: Everything You Need To Know
Hornady Subsonic Rifle Ammo Review - RifleShooter
Hornady® Announces New Products for 2020 - Hornady Manufacturing, Inc.
Premium 300 AAC Blackout Ammo For Sale - 190 Grain Sub-X Ammunition in Stock by Hornady Subsonic - 20 Rounds
Ammo 2023 - SHOT Business
Gunworks - 30cal .308 190gr Hornady Sub-X 30730
7.62X39 255 gr Sub-X® Subsonic - Hornady Manufacturing, Inc
Hornady Subsonic 30-30 Winchester 175gr Sub-X FlexTip, 20 Round Box, 175 grain, 20rd, 090255808094, AMMO-80809, RTG Parts
Heavy 168/178gr 7.62x39 seems to be frowned upon.. : r/reloading