The Cor-Bon .357 SIG 125gr DPX is a 20-round box of solid copper duty and defense ammunition (Cor-Bon part no. DPX357SIG125/20). Cor-Bon uses a Barnes X style solid copper bullet that is designed for barrier-blind performance, with consistent expansion through clothing and barriers. The 125-grain bullet leaves the muzzle at 1300 fps in the maker’s 4-inch test. The load is made in the USA and suits law enforcement, duty carry, and personal defense.

Key Specifications

• Chambering is .357 SIG, the cartridge this load is made for.
• Bullet weight is 125 grains, a lead-free solid copper bullet.
• The bullet is a DPX solid copper hollow point, a Barnes X design.
• Muzzle velocity is 1300 fps, measured from a 4-inch test barrel.
• Muzzle energy is 505 ft-lbs, listed for the same 4-inch test barrel.
• The maker lists the bullet as lead-free in its product attributes.
• The stated use is self-defense, duty carry, and barrier penetration.
• Each box holds 20 rounds.

Frequently Asked Questions

What bullet is in this .357 SIG load? A 125-grain DPX, which is a solid copper hollow point designed by Cor-Bon around a Barnes X bullet.

Is it intended for duty use? Cor-Bon lists self-defense, duty carry, and barrier penetration as the use case for this load.

What does barrier-blind mean for this ammunition? It refers to ammunition that expands consistently after passing through barriers such as clothing, as Cor-Bon describes for this load.

Buy the Cor-Bon .357 SIG 125gr DPX Ammunition, 20-Round Box

The .357 SIG DPX pairs a copper bullet with consistent expansion that keeps working through barriers. Order it from our Lubbock, Texas gun shop for fast, insured shipping, and compare it with other handgun ammunition on the site.