Hornady 3148 Sub-X .3115 Caliber 255 Grain Reloading Bullets

Hornady Sub-X bullets are engineered for reliable performance at subsonic velocities, making them a practical choice for reloaders developing quiet, controlled loads. Part number 3148 uses a heavy 255-grain lead core intended to support deep penetration while maintaining consistent bullet performance. These are reloading components, not loaded ammunition, and should be assembled only with published load data and appropriate reloading practices.
The Sub-X design combines a gilding metal jacket with extended grooves, a flat profile, and a patented Flex Tip insert positioned within the hollowpoint cavity. Together, these design elements help the bullet initiate expansion at lower velocities than many conventional hunting bullets. The Flex Tip also helps protect the hollowpoint during handling and feeding, supporting consistent bullet presentation when used in compatible firearms and properly assembled cartridges.
A cannelure is included to help provide a positive case crimp during the reloading process. This feature can support secure bullet retention and consistent cartridge construction, particularly in semiautomatic platforms where ammunition may be subjected to repeated cycling. The Hornady Sub-X 255-grain bullet is intended for experienced reloaders seeking a purpose-built projectile for subsonic applications. Always verify firearm compatibility, seating depth, powder selection, and load limits before use, and follow current Hornady reloading data and all applicable safety guidelines.

Features:

• Bullet Weight: 255 grains

• Bullet Type: Subsonic expanding reloading bullet

• Lead Core: Heavy lead core designed to support deep penetration

• Flex Tip: Patented insert helps promote reliable expansion at lower velocities

• Cannelure: Supports positive case crimping for secure bullet retention