Will a 12ga Slug Penetrate Drywall (Gypsum)?

Yes — defeats a 13 mm drywall (gypsum) barrier
Penetration depth
376 mm (14.8″)
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 376 mm (14.8 inches) into drywall (gypsum). That is enough to defeat a typical barrier of this material — treat anything behind it as exposed.

About Drywall (Gypsum)

One sheet of interior drywall is ~13 mm; a wall is two sheets and a gap.

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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