The secret to PowerStrike is its High Energy Transfer (H.E.T.) technology. PowerStrike is a Lead-Free powder metal High Energy Transfer (H.E.T.) round designed to create controlled penetrating fragmentation in soft targets. It is excellent for hunting small, large and dangerous game as it can penetrate thick bone and hide. For tactical applications, it can penetrate light barriers to reach the target while still fragmenting inside the target. Read the full review.