How deep does a .380 ACP penetrate Drywall (Gypsum)?

At the muzzle, a representative .380 ACP load penetrates approximately 257 mm (10.1 inches) into drywall (gypsum).

What is the impact energy of a .380 ACP?

This .380 ACP load carries about 261 joules (192 ft-lb) at the muzzle.

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Will a .380 ACP Penetrate Drywall (Gypsum)?

Yes — defeats a 13 mm drywall (gypsum) barrier

Penetration depth

257 mm (10.1″)

Impact velocity

290 m/s (951 fps)

Muzzle energy

261 J (192 ft-lb)

Bullet behaviour

Intact

Fired at the muzzle, a representative .380 ACP load (6.2 g, FMJ, 290 m/s) reaches roughly 257 mm (10.1 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.

.380 ACP against other materials

Material	Depth (mm)	Depth (in)
Red Brick	38 mm	1.5″
Concrete	20 mm	0.8″
Tempered Glass	8 mm	0.3″
Steel A36	1 mm	0.0″
Steel AR500	1 mm	0.0″

Run your own numbers in the calculator →

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Will a .380 ACP Penetrate Drywall (Gypsum)?

About Drywall (Gypsum)

.380 ACP against other materials

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