The HST (Hi-Shok Two) bullet is engineered for reliable terminal performance without fragmentation:

• Large hollow-point cavity: Promotes rapid and consistent expansion
• Skived jacket (pre-cut lines): Controls how the bullet expands into uniform petals
• Mechanical core-jacket lock: Prevents separation and maximizes weight retention
• Barrier performance: Designed to expand reliably through clothing and intermediate barriers

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Terminal Performance

• Expansion: Typically expands to nearly double the original diameter in ideal conditions
• Penetration: Designed to meet FBI standards (approx. 12–18 inches in ballistic gel)
• Weight retention: High retained mass for deeper, controlled penetration
• Energy transfer: Efficient transfer without excessive over-penetration

Compared to older designs (like Hydra-Shok), HST offers more consistent expansion and better performance through barriers.