Hornady 90511 Critical Duty .357 Magnum 135gr FlexLock ammo is built for superior barrier penetration, consistent expansion, and maximum weight retention. Designed for law enforcement and self-defense, it features the patented Flex Tip that prevents clogging and promotes reliable terminal performance. The heavy-duty InterLock band secures the jacket to the high-antimony lead core, preventing separation and ensuring deep penetration. Nickel-plated brass resists corrosion and improves visibility in low-light chamber checks. With a crimped case and cannelured bullet, this round offers dependable feeding and durability under stress.