How deep does a .30-06 penetrate Water?

At the muzzle, a representative .30-06 load penetrates approximately 1343 mm (52.9 inches) into water.

What is the impact energy of a .30-06?

This .30-06 load carries about 3756 joules (2770 ft-lb) at the muzzle.

Penetrates to ~53″ before stopping

Penetration depth

1343 mm (52.9″)

Impact velocity

880 m/s (2887 fps)

Muzzle energy

3756 J (2770 ft-lb)

Bullet behaviour

Intact

Fired at the muzzle, a representative .30-06 load (9.7 g, FMJ, 880 m/s) reaches roughly 1343 mm (52.9 inches) into water.

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