- Subsonic expanding bullet — reliable expansion at velocities as low as 900 fps
- Patented Flex Tip insert in hollowpoint cavity initiates upset below the sonic threshold
- Lead core with grooved gilding metal jacket for consistent, controlled expansion
- Cannelured jacket allows positive case crimp — reduces bullet set-back in semi-automatic actions
- Flat-nose profile designed to fit, feed and function across a wide range of firearms
- Meets FBI protocol for terminal ballistic performance
- Component reloading bullets, .458 diameter, 410 grains
The Hornady Sub-X (Subsonic — eXpanding) bullet in .458 calibre, 410 grains, is a component reloading projectile purpose-built to deliver controlled expansion at velocities below the speed of sound. The lead core is enclosed in a gilding metal jacket with long grooves that work in concert with the bullet's flat profile and patented Flex Tip insert — seated within the hollowpoint cavity — to initiate reliable upset from as low as 900 fps. This makes the Sub-X an excellent choice for handloaders developing suppressed or subsonic loads for lever-action, straight-wall cartridge or pistol-calibre carbine rifles chambered in .45-70, .458 SOCOM or similar. Cannelures on the jacket provide a positive case crimp and reduce the risk of bullet set-back when cycling through gas-system or semi-automatic actions. Hornady state these bullets meet FBI protocol for terminal ballistic performance. Sold as component bullets for handloading.
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