.357 Mag 125gr DPX – Barrier-Blind Defense. Proven Expansion. In self-defense, there’s no room for guesswork. You need a round that performs every time—no matter what’s in the way. COR®BON’s .357 Mag 125gr DPX is designed for that exact purpose, delivering rapid expansion, deep penetration, and total weight retention—even through glass, steel, and other hard barriers. This load features our proven DPX® bullet, machined from a 100% solid copper slug. Unlike traditional hollow points that rely on velocity alone, the DPX is engineered for controlled, mechanical expansion. Six sharp petals unfold on impact, doubling the bullet’s diameter and creating a wide, permanent crush cavity. Internal serration cuts ensure this expansion happens consistently—even through clothing or intermediate barriers. During FBI protocol testing, this round achieved 12–18 inches of soft tissue penetration after passing through four layers of denim. In ballistic gel, the recovered bullets retained 100% of their original weight and shape. That means you’re getting consistent terminal performance, round after round, with no fragmentation or deviation. At 1300 feet per second and 469 foot-pounds of energy (from a 4-inch test barrel), COR®BON’s .357 Mag 125gr DPX delivers serious stopping power in both revolvers and lever-action platforms. Additionally, it’s lead-free and fully California compliant—making it a smart choice for both carry and range use in restricted environments. Whether you’re defending your home or carrying concealed, this load offers tactical reliability backed by real-world results. When your life depends on it, trust the round that redefined what a defensive handgun bullet can do. Specifications and Features Caliber: .357 Magnum Bullet Weight: 125 grains Bullet Type: DPX (Solid Copper Hollow Point) Muzzle Velocity: 1300 fps Muzzle Energy: 469 ft-lbs Barrel Length (Tested): 4.0 inches Application: Self-defense, barrier penetration, concealed carry Lead-Free: Yes (California compliant) Rounds Per Box: 20 Made in the USA WARNING: Improperly hand-loaded ammunition can cause serious injury, death and damage to firearms. Ammunition may contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Use only in modern firearms in good condition, free of any obstruction and chambered for the caliber of the ammunition. All firearms may be dangerous if used carelessly or with disregard for safe handling practices. Since loading practices are beyond our control, we disclaim all liability which may result. Designing firearms in support of unlawful activity is a violation of federal law. It is unlawful to use armor piercing handgun ammunition in California. It is illegal to ship ammunition to persons under 21, and other states/cities have additional restrictions. Always keep ammunition in a secure location, away from heat and other sources known to cause ignition or detonation. Wash hands thoroughly after handling ammunition or spent cartridges, projectiles, and other related materials. Improper use of this product may result in serious physical injury. Please use with extreme caution. KEEP OUT OF REACH OF CHILDREN. All trademarks on the package belong to their rightful owners. WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov
