Will a .40 S&W Penetrate Red Brick?

No — stops inside red brick (reaches 59 mm of a 90 mm barrier)
Penetration depth
59 mm (2.3″)
Impact velocity
300 m/s (984 fps)
Muzzle energy
527 J (388 ft-lb)
Bullet behaviour
Intact

Fired at the muzzle, a representative .40 S&W load (11.7 g, FMJ, 300 m/s) reaches roughly 59 mm (2.3 inches) into red brick. It loses its energy before defeating a typical barrier of this material.

About Red Brick

A single wythe of red brick (~90 mm) is typical of older exterior walls.

.40 S&W against other materials

MaterialDepth (mm)Depth (in)
Concrete31 mm1.2″
Tempered Glass13 mm0.5″
Steel A361 mm0.0″
Steel AR5001 mm0.0″
Aluminum 60618 mm0.3″
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