Hornady Subsonic 450 Bushmaster 395gr Sub-X Ammo

Description

The 450 Bushmaster has earned a solid reputation for delivering serious stopping power in AR-15 platform rifles, but subsonic loadings take the cartridge in a different direction entirely. Instead of chasing velocity, Hornady engineered this subsonic round around reliability at the lowest speeds, where most ammunition struggles to perform.

The 395-grain Sub-X bullet drives this load. At subsonic velocities, the physics of expansion change dramatically. That's why Hornady built this bullet with a soft lead core wrapped in a thin gilding metal jacket that deforms easily at low pressures. Long grooves in the jacket work with the bullet's flat profile to encourage controlled opening. The real star is the patented Flex Tip insert in the hollowpoint cavity, designed to initiate expansion reliably even below 900 fps. Most traditional hunting bullets fail catastrophically at these speeds, but the Sub-X was engineered specifically for the challenge.

Subsonic ballistics you can count on

These rounds clock 1050 fps from the muzzle, sitting well below the sound barrier. That means no supersonic crack, which becomes critically useful when running a suppressor. Pair this with a quality can and you're looking at hearing-safe performance that lets you stay in communication with hunting partners. The powders are selected for consistent lot-to-lot performance and produce a low flash signature, giving you reliability whether you're running suppressed or unsuppressed.

Built for the field

Each round comes loaded in quality brass cases with Boxer primers, making them reloadable for those who want to stretch their dollar further. The cannelure on the bullet provides positive case crimp for reliable feeding in semi-auto platforms like the AR-15. Muzzle energy sits at 967 foot-pounds, delivering the kind of penetration that matters at practical hunting ranges.