How deep does a 7.62x39 penetrate Ballistic Gel 10%?

At the muzzle, a representative 7.62x39 load penetrates approximately 699 mm (27.5 inches) into ballistic gel 10%.

What is the impact energy of a 7.62x39?

This 7.62x39 load carries about 2045 joules (1508 ft-lb) at the muzzle.

Over-penetrates (28″ vs 18″ FBI maximum)

Penetration depth

699 mm (27.5″)

Impact velocity

715 m/s (2346 fps)

Muzzle energy

2045 J (1508 ft-lb)

Bullet behaviour

Intact

Fired at the muzzle, a representative 7.62x39 load (8 g, FMJ, 715 m/s) reaches roughly 699 mm (27.5 inches) into ballistic gel 10%.

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