Speer 4726 TMJ Value Pack 9mm 124gr bullets provide a cleaner, more accurate training solution in a bulk 600-count box. Utilizing Uni-Cor technology, the jacket is electrochemically bonded to the lead core, encasing it completely to eliminate lead vaporization at the base. Double-swaged for diameter consistency, these projectiles ensure reliable feeding and match-grade accuracy, making them ideal for high-volume indoor range practice and reducing airborne lead. Defensive Application Non-expanding TMJ bullets are designed for target use; they pose high over-penetration risks and lack the expansion needed for effective personal defense.