How deep does a 12ga Slug penetrate Ballistic Gel 10%?

At the muzzle, a representative 12ga Slug load penetrates approximately 432 mm (17.0 inches) into ballistic gel 10%.

What is the impact energy of a 12ga Slug?

This 12ga Slug load carries about 3538 joules (2609 ft-lb) at the muzzle.

Ideal penetration (17″, within FBI 12–18″)

Penetration depth

432 mm (17.0″)

Impact velocity

500 m/s (1640 fps)

Muzzle energy

3538 J (2609 ft-lb)

Bullet behaviour

Intact

Fired at the muzzle, a representative 12ga Slug load (28.3 g, SLUG, 500 m/s) reaches roughly 432 mm (17.0 inches) into ballistic gel 10%.

10% ordnance gelatin is the FBI reference medium; 12–18 in (305–457 mm) is the accepted penetration window.