Cor-Bon .357 SIG 125-grain JHP ammunition (brand part no. 357SIG125) is matched to a cartridge already known for velocity most other semi-auto rounds cannot touch. The bottlenecked .357 SIG case drives this 125-grain jacketed hollow point hard, and Cor-Bon‘s internal and external serration cuts over a soft lead cavity are built to make the most of that speed with consistent, controlled expansion. This JHP line has shown 9 to 15 inches of penetration in gelatin testing, landing inside the range recognized for dependable defensive ammunition. For duty and carry pistols chambered in .357 SIG, this handgun ammunition pairs the cartridge’s signature velocity with a bullet designed to use it.

Key Specifications

• The caliber is .357 SIG, a bottlenecked cartridge known for exceptional velocity in a semi-auto pistol round.
• The bullet weighs 125 grains, a common weight for taking full advantage of .357 SIG’s speed.
• The bullet is a jacketed hollow point (JHP), built to expand rather than simply punch through at high velocity.
• Internal and external serration cuts score the jacket for even, controlled expansion.
• A soft lead hollow-point cavity helps the bullet mushroom uniformly instead of clogging on the way in.
• Gelatin testing on this JHP line averages 9 to 15 inches of penetration, within accepted defensive-ammunition standards.
• The bottlenecked .357 SIG case feeds reliably and headspaces on the case mouth like a rifle cartridge.
• Each box holds 20 rounds, enough to load several magazines for carry or practice.
• Cor-Bon packages this load in 500-round case lots for shooters who train with their duty or carry ammunition.

Frequently Asked Questions

Why is .357 SIG known for high velocity? Its bottlenecked case, similar in shape to a rifle cartridge, drives bullets faster than most other semi-auto pistol calibers of similar bullet weight.

Does this bullet still expand at .357 SIG velocities? Yes, Cor-Bon’s serrated JHP design is built to open consistently rather than simply punching a narrow channel at high speed.

Is this a good duty or carry round? With 9 to 15 inches of gelatin penetration and reliable expansion, it meets the standards many duty and carry shooters look for in .357 SIG.

Buy Cor-Bon .357 SIG 125gr JHP Ammo

The .357 SIG has always been about velocity, and this load makes sure that speed translates into expansion instead of over-penetration. It is a natural fit for the duty and carry pistols this cartridge was built for. Order from our Lubbock, Texas gun shop and it ships fast to your door.