Will a 10mm Auto Penetrate Cinder Block?

No — stops inside cinder block (reaches 59 mm of a 60 mm barrier)
Penetration depth
59 mm (2.3″)
Impact velocity
380 m/s (1247 fps)
Muzzle energy
845 J (623 ft-lb)
Bullet behaviour
Intact

Fired at the muzzle, a representative 10mm Auto load (11.7 g, FMJ, 380 m/s) reaches roughly 59 mm (2.3 inches) into cinder block. It loses its energy before defeating a typical barrier of this material.

About Cinder Block

A hollow concrete block presents ~50–60 mm of actual material across its face shells.

10mm Auto against other materials

MaterialDepth (mm)Depth (in)
Red Brick86 mm3.4″
Concrete47 mm1.8″
Tempered Glass19 mm0.7″
Steel A364 mm0.2″
Steel AR5001 mm0.0″
Run your own numbers in the calculator →

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