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 Subsonic Rifle Ammo Review: Slow, Suppressed, and Lethal
Hornady Subsonic Rifle Ammo Review: Slow, Suppressed, and Lethal
First Look: Hornady Subsonic 7.6x39mm Ammo
Hornady Subsonic 7.62x39mm: Shhhh - The Mag Life
Hornady Subsonic 30-30 Winchester 175gr Sub-X FlexTip, 20 Round Box, 175 grain, 20rd, 090255808094, AMMO-80809, RTG Parts
Hornady Subsonic Rifle Ammo 7.62x39 255gr SUB-X 1050 FPS Subsonic 20/box
Hornady Sub-X 45-70 GOVT 410gr x20
Can a 7.62x51mm gun use 7.62x39mm ammo? - Quora
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Hornady 2022 Product Catalog PDF, PDF, Bullet
Anyone loading 7.62x39 255gr subs? (GRT Assist?) : r/reloading
Hornady® Announces New Products for 2020 - Hornady Manufacturing, Inc.