Will a 12ga Slug Penetrate Cinder Block?

Yes — defeats a 60 mm cinder block barrier
Penetration depth
62 mm (2.4″)
Impact velocity
500 m/s (1640 fps)
Muzzle energy
3538 J (2609 ft-lb)
Bullet behaviour
Intact

Fired at the muzzle, a representative 12ga Slug load (28.3 g, SLUG, 500 m/s) reaches roughly 62 mm (2.4 inches) into cinder block. That is enough to defeat a typical barrier of this material — treat anything behind it as exposed.

About Cinder Block

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

12ga Slug against other materials

MaterialDepth (mm)Depth (in)
Red Brick81 mm3.2″
Concrete19 mm0.8″
Tempered Glass8 mm0.3″
Steel A364 mm0.1″
Steel AR5001 mm0.0″
Run your own numbers in the calculator →

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