Metal Jacket Bullet Page

In the world of ballistics, few innovations have bridged the gap between military necessity and civilian sport as effectively as the metal jacket bullet . Commonly known as "Full Metal Jacket" (FMJ), this projectile is instantly recognizable by its distinctive appearance: a soft core (usually lead) completely encased in a harder shell of copper, brass, or steel.

Whether you are a soldier obeying the Hague Convention or a weekend shooter plinking cans, the humble copper-clad FMJ remains the workhorse of the gun world—a testament to the fact that sometimes, covering something up makes it work better. Disclaimer: This article is for informational and historical purposes regarding ballistics technology. Always verify local laws regarding ammunition types, as restrictions on FMJ or armor-piercing variants vary by jurisdiction. metal jacket bullet

Traditional lead bullets are cheap and malleable, which is good for engaging rifling. However, they have two major flaws: they deform violently upon impact (expansion) and they leave deposits of lead fouling in the barrel. In the world of ballistics, few innovations have