Cor-Bon DPX .357 SIG 125gr XPB ammunition (part no. DPX357SIG125/20) loads a 125-grain xpb bullet in .357 SIG, built for personal defense and deep-penetration performance. Cor-Bon loads DPX around Barnes’ all-copper XPB hollow point, driven to +P-class velocity for expansion and penetration that holds up even through barriers. XPB construction penetrates deep without fragmenting, built for reliable terminal performance. In handgun ammunition for personal defense, this is the load built for exactly that.

Key Specifications

• The caliber is .357 SIG, a bottlenecked, high-velocity round built to mimic .357 Magnum ballistics in a semi-auto.
• The bullet weighs 125 grains, a mid-weight bullet balancing velocity and expansion for typical defensive ranges.
• The bullet type is XPB, an all-copper hollow point engineered for deep, reliable penetration without fragmenting.
• Muzzle velocity is rated at 1350 fps, in line with typical factory loads for this caliber.
• Cor-Bon markets this under its DPX line, known for Barnes’ all-copper XPB hollow point driven to high velocity for penetration and expansion.
• Each box holds 20 rounds, enough to load up, confirm point of impact, and still carry a fresh box.
• Shipping weight per box runs about 0.65 pounds, useful for shooters planning a case-quantity order.

Frequently Asked Questions

Will this bullet expand on impact? Yes, the all-copper XPB bullet is engineered to expand reliably while penetrating deep, without fragmenting.

What makes .357 SIG a good choice? .357 SIG is a bottlenecked, high-velocity round built to mimic .357 Magnum ballistics in a semi-auto, which is exactly why Cor-Bon loads it in this configuration.

Buy the Cor-Bon DPX .357 SIG 125gr XPB

Carry it or keep it in the nightstand knowing the load behind it is built to perform when it counts. Order the Cor-Bon DPX .357 SIG 125gr XPB from our Lubbock, Texas gun shop and it ships fast to your door.