Can A Semi Auto Be Fired Under Water?

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LegalAlien

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Guns and Ammo on the Outdoor Channel last night did it.Anybody watch this?

They fired a Springfield Armory 1911 .45ACP underwater in a swimming pool.

First shot went ok - cycled and ejected spent cartridge

Second shot fired - ejected cartridge - stovepiped 3rd rd.

Was interesting to watch -bullet travelled about 15ft in total

Gun suffered some damage - bulged barrel.
 
Mythbusters showed it could be done with several different types of firearms. They placed them in troughs of water and fired them. Left unmentioned by them was that water conducts sound much more efficiently than air. So if you did fire a gun while underwater, it would probably sound far worse than normal. A scary thought with some of the eardrum busters they have out their nowadays.
 
There are a few firearms that are designed specifically to be fired underwater, but it's generally not a good idea. The Russians have a drastically re-worked version of the AKM rifle that fires 22-calibre darts for underwater use, and it's issued to Spetsnaz divers that are assigned to guard harbours, etc.

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There was a james bond movie that had gun you could fire underwater. So an underwater gun exists.

But you know what let's just leave it alone, I don't want to start seeing some goober on a canned tv hunt getting taken out to a herd of carp and being told by the guide to take out the lead carp before he attacks. We don't need that.
 
There was a james bond movie that had gun you could fire underwater. So an underwater gun exists.

There was also an Aston Marton V12 Vanquish that could turn invisible...

If A=B, and B=C, then A= I'm goin out to buy an invisible car.
 
I'm sure firing a gun underwater doesn't create a lot more pressure in the barrel from pushing out the water. It only might damage the gun, but who cares about that it's cool.
 
At least we know it can be done, and without some drunk person saying:" Hey, ya'll, watch this"!
 
We have fired a 1911 stainless .45 acp in sea water at a depth of 40'. The gun fired several times without problems and the bullets went 15-20 feet.. We could kill fish if we were a foot or less away. It wasn't very loud but did make a muffled report. About every third round would either misfire or fail to feed in some way. The hammar moving through a medium that is 800 times denser than air tends to slow things down a bit. Clearing jams (fail to fire) and reloading magazines with neoprene gloves on was a challenge. One of the guys was (after several observations and determining the predictably) actually catching bullets fired in his direction. It was a lark at the time (15 years ago) and kind of a fun experience but the pistol was a bitch to clean. It had to be completely disassembled and put in a sonic cleaner.
 
Yes... but it may not go back into battery, due to water resistance. Hammer/striker springs are typically more powerful than they need to be, possibly to compensate for wear, possibly to deal with abnormally hard primers. Cartridges are pretty much sealed airtight from the factory, so getting 'em wet won't normally let water soak into the powder/primer.
 
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