Lehigh's Maximum Expansion technology creates projectiles that generate the largest wound channels of any bullet. These unique hollow points expand upon contact with fluid based mediums, utilizing hydraulic energy. Unlike traditional bullets that expand upon hitting dry materials like wood, bone or sheet metal, Lehigh's design ensures expansion only where it's most needed within the vital zone of your target. The handgun bullets featuring Maximum Expansion technology open with razor-sharp petals, maintaining the largest diameter for maximum cutting surface. In contrast, traditional jacketed bullets mushroom, reducing their diameter and effectiveness. The maximum diameter expansion limits penetration, making Lehigh's Maximum Expansion bullets ideal for situations where over-penetration could pose a danger to innocents.