Will a 9mm Luger Penetrate Drywall (Gypsum)?

Yes — defeats a 13 mm drywall (gypsum) barrier
Penetration depth
317 mm (12.5″)
Impact velocity
360 m/s (1181 fps)
Muzzle energy
518 J (382 ft-lb)
Bullet behaviour
Intact

Fired at the muzzle, a representative 9mm Luger load (8 g, FMJ, 360 m/s) reaches roughly 317 mm (12.5 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.

9mm Luger against other materials

MaterialDepth (mm)Depth (in)
Red Brick70 mm2.7″
Concrete38 mm1.5″
Tempered Glass16 mm0.6″
Steel A363 mm0.1″
Steel AR5001 mm0.0″
See exactly what 9mm Luger does to Drywall (Gypsum) — open in the calculator →

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