Commonwealth Ammunition’s 40 cal CMJ ammo pairs a heavy 180 grain bullet with a fully sealed jacket. The result is cleaner shooting, a softer push and consistent cycling. In short, it’s a smart everyday load for .40 S&W shooters.

Why Choose 40 Cal CMJ Ammo?

Standard FMJ bullets leave the lead base exposed. When the round fires, hot gases can vaporize some of that lead. However, a Complete Metal Jacket (CMJ) covers the sides and the base of the bullet. Therefore, the core stays sealed, and you breathe less lead at the firing line.

The sealed base also means less fouling in your barrel, compensator and optic. As a result, your gun stays cleaner between sessions.

Why 180 Grains?

The 180 grain bullet is the heaviest common .40 S&W weight. Instead of a sharp snap, it gives a smooth, predictable push. That helps you recover your sights faster and shoot quicker splits. For this reason, it’s a popular choice for duty pistols, pistol-caliber carbines and action shooting matches.

Built the Same Way Every Time

Commonwealth loads every round under its SWET (Same Way Every Time) process. They use new reloadable brass, non-corrosive primers and clean-burning powder. Then they gauge and inspect each cartridge. Consequently, you can expect steady feeding and ignition from box to box.

Specifications

• Brand: Commonwealth Ammunition
• Caliber: .40 S&W
• Bullet: 180 grain CMJ (Complete Metal Jacket)
• Case: New brass, Boxer primed, reloadable
• Quantity: 50 rounds

Common Questions

Is CMJ good for indoor ranges? Yes. Many indoor ranges prefer encapsulated bullets because they reduce airborne lead. Still, check your range rules.

Will it work in my competition gun? It cycles reliably in full-size duty pistols and tuned competition guns. As always, test a few magazines first.

Can I reload the brass? Yes. The new brass uses Boxer primers.

To learn more, visit Commonwealth Ammunition. You can also browse all of our handgun ammunition.