Will a .308 Winchester Penetrate Water?

Penetrates to ~55″ before stopping
Penetration depth
1386 mm (54.6″)
Impact velocity
840 m/s (2756 fps)
Muzzle energy
3352 J (2472 ft-lb)
Bullet behaviour
Intact

Fired at the muzzle, a representative .308 Winchester load (9.5 g, FMJ, 840 m/s) reaches roughly 1386 mm (54.6 inches) into water.

About Water

Water is a dense fluid medium; bullets destabilise and shed velocity quickly.

.308 Winchester against other materials

MaterialDepth (mm)Depth (in)
Red Brick239 mm9.4″
Concrete199 mm7.8″
Tempered Glass36 mm1.4″
Steel A3617 mm0.7″
Steel AR5008 mm0.3″
Run your own numbers in the calculator →

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