A rifle bullet can go clean v a brick wall surface – yet there’s one sort of defense it can’t deal with: water. In the movies, a fleeing hero who dives right into the water is invariably safe as soon as the poor guys open up fire on him. Mythbusters looked right into this one, and after some intricate tests through <…>

A rifle bullet have the right to go clean with a brick wall - however there's one sort of defense it can't deal with: water.

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In the movies, a fleeing hero that dives into the water is invariably safe as soon as the poor guys open up fire top top him. Mythbusters looked right into this one, and after some sophisticated tests v a variety of weapons and ammunition, confirmed that water really is 'bulletproof' and rounds will either rest apart totally or be efficiently stopped within a few feet:

The how amazing thing about the bulletproof water was exactly how poorly the high-powered rifles did. The complete metal coat bullets for the high-powered rifles came apart ~ above hitting the water. Also the dreaded .50 caliber rifle was only able come penetrate about 3 ft that water.* *

But supercavitating bullets cut through water far an ext easily than regular projectiles, as I disputed I freshly in a buzzpatterson.com News article. Perhaps an ext importantly, they deserve to punch appropriate through the air-water interface which defeats common ammo. Blunt-tipped projectiles moving at high velocity will create a 'bubble' of low pressure roughly themselves and can pass through the air-water user interface much more easily, retaining velocity into the water.

The Russian APS Underwater attack Rifle fires long, flat-nosed projectiles- the pics here provide you a good idea that what castle look like and also why the newspaper is that strange shape. (Pedant note: the APS is actually a smoothbore and also not a rifle in ~ all.) according to the makers, it no only has a selection of as much as 100 feet underwater, that can additionally be used to fire native the air into the water. The weapon might be supplied to shoot in ~ divers or swimmers from a boat, for example - or also fire native underwater right into the air. In theory, a squad of APS-armed Spetsnaz frogmen could carry out one ambush on a convoy passing over a leg from underwater, while being immune to return fire… but I can see some troubles with this concept.

More practically, the cavitation effect is supplied in the gift Penetrator darts being arisen by the U.S. Navy. A mass of these darts reduce in the surf zone would neutralize mines in sand as well as those under numerous feet of water.

Even an ext ambitious is the RAMICS program, another anti-mine effort. The helicopter-mounted 20mm cannon might destroy mines within 20 feet of the surface with a one-of-a-kind supercavitating projectile. This has now been upgraded come 30mm, but initial operational capacity is not intended until 2010 or so.

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Another associated idea is just how well a supercavitating round will go through flesh. The supercavitating SuperPenetrator is a special huge Game bullet designed by Norbet Hansen for maximum penetration. He tested the round on elephantsand uncovered it 'extremely effective' compared to various other bullets which can tumble or rest up and also fail to kill huge animals cleanly. Previously I to be dubious about where friend really might take on a shark through an underwater gun, yet maybe the equipments are correct when they case the APScan defend against ' rapacious fish', and ' also shark.'

(Many many thanks to Max Popenker of world.guns.rufor the APS photo)

P.S. The idea in reality goes means back. As Nathan Okun points out, the Japanese offered this rule in WWII because that shells intended to hit ships listed below the waterline. Luckily they didn't work-related too well.