Will a .357 Magnum Penetrate Steel A36?

No — stops inside steel a36 (reaches 2 mm of a 6 mm barrier)
Penetration depth
2 mm (0.1″)
Impact velocity
395 m/s (1296 fps)
Muzzle energy
796 J (587 ft-lb)
Bullet behaviour
Expanded

Fired at the muzzle, a representative .357 Magnum load (10.2 g, SP, 395 m/s) reaches roughly 2 mm (0.1 inches) into steel a36. It loses its energy before defeating a typical barrier of this material.

About Steel A36

Mild structural steel plate (~6 mm); car bodies are far thinner (~1 mm).

.357 Magnum against other materials

MaterialDepth (mm)Depth (in)
Red Brick99 mm3.9″
Concrete54 mm2.1″
Tempered Glass14 mm0.5″
Steel AR5001 mm0.0″
Aluminum 606110 mm0.4″
Run your own numbers in the calculator →

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