Will a .380 ACP Penetrate Tempered Glass?

Yes — defeats a 6 mm tempered glass barrier
Penetration depth
8 mm (0.3″)
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 8 mm (0.3 inches) into tempered glass. That is enough to defeat a typical barrier of this material — treat anything behind it as exposed.

About Tempered Glass

Tempered and automotive glass runs about 6 mm thick.

.380 ACP against other materials

MaterialDepth (mm)Depth (in)
Red Brick38 mm1.5″
Concrete20 mm0.8″
Steel A361 mm0.0″
Steel AR5001 mm0.0″
Aluminum 60615 mm0.2″
See exactly what .380 ACP does to Tempered Glass — open in the calculator →

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