Ammunition manufacturer Hornady DGS is marketing its brand of super-cavitation bullets designed for subsurface use. In testing, it has been shown that just a few feet of water is generally enough to stop a bullet. This means conventional ammunition is of very limited use to combat divers and other Special Operations teams while conducting sub-surface missions with SCUBA or re-breather equipment. Super-cavitation is a technique that was designed for submarine torpedoes in which an air bubble is formed around the projectile in order to greatly reduce the water’s friction against its skin, thereby increasing range and speed.

DGS has now developed a line of rifle ammunition called CAV-X. From the DGS website:

Classified as Multi Environment Ammunition – MEA™ – this projectile is effective against submerged targets and targets in the air. Depending on the weapon and the used loading variant, this ammunition is suitable for use in partial or fully-submerged weapons, regardless of if the target is in water or on the surface.

Due to the unconventional shape and significant mass, this round offers great armor-piercing capability against Multi-Layer Structures. This shape is also very effective against targets with fiber structure or mud, even when covered by sand.

This projectile may be offered in two loading variants, A2 and X2, where both enable swimming capabilities.

A series of artists’ renderings show the potential uses of CAV-X ammo by SOF teams, such as combat divers engaging in an aquatic firefight with other divers, a diver shooting out a security camera watching a dock area from concealment underwater, and most interestingly, a pair of combat divers shooting it out with military killer dolphins!

Ammo maker declares war on "trained wildlife," including dolphins

Yes, such military dolphin programs do exist. NEWSREP recently interviewed a retired member of the Navy’s Marine Mammal program who described the Mark 6 Mod 0 program. The program has its origins back in the Vietnam War with the CIA’s sub-surface warfare office where they were working on anti-swimmer devices. Later, the program was taken over by the Navy, specifically Navy EOD. The dolphin’s echo-location turned out to be amazingly good at finding enemy divers and unexploded ordnance. The Russians developed a similar program.