The Hornady Sub-X .45 Cal .458" 410gr Projectiles are premium component reloading bullets, specifically engineered for reliable subsonic expansion. Designed to deliver effective terminal ballistics without the characteristic supersonic 'crack,' these projectiles are ideal for suppressed .45-70 Government setups and custom big-bore subsonic cartridges, perfect for various hunting and sporting applications.

• Patented Flex Tip® Technology: Unlike standard hunting projectiles that rely on high-velocity hydraulic pressure for expansion, the Sub-X features a soft elastomer Flex Tip insert within a deeply grooved gilding metal jacket. This innovative design ensures reliable bullet expansion at velocities as low as 900 FPS, well below the speed of sound.

• Deep Penetration Core: Constructed with a dense, solid lead core, these projectiles achieve deep penetration metrics consistent with rigorous ballistic testing. They deliver massive momentum transfer on medium to large game (50-300 lbs), ensuring effective performance without superficial fragmentation.

• Positive Case Crimp: The bullet profile incorporates a sharp, stamped crimping cannelure. This feature facilitates an aggressive case mouth roll-crimp, preventing the heavy 410gr projectiles from moving or telescoping inward under recoil in tubular magazines (such as Lever-Action rifles) or heavy semi-automatic platforms.