Total Metal Jacket (TMJ)

Target Range

Total Metal Jacket (TMJ) bullets have the jacket fully enclosing the bullet including the base, completely preventing lead exposure. This makes TMJ ideal for indoor ranges where airborne lead is a health concern.

Use Type

Indoor Range

Range Training

Specifications

Core Material: Lead
Jacket Material: Copper / Brass
Base Coverage: Fully enclosed
Lead Exposure: Minimal
Indoor Use: Excellent
Cost: Slightly higher than FMJ
Common Calibers: 9mm, .40, .45, .38
Best Use: Indoor ranges

Comparison

Type	Base	Lead Exposure	Indoor Use
FMJ	Exposed	Moderate	OK
TMJ	Enclosed	Minimal	Excellent
Frangible	N/A	None	Best

FAQ

Why TMJ for indoor ranges?

The enclosed base prevents lead vaporization when fired, significantly reducing airborne lead. Many indoor ranges require or recommend TMJ or similar enclosed-base ammo.

TMJ vs FMJ performance?

Virtually identical ballistically. TMJ costs slightly more but offers health benefits for high-volume indoor shooting.