I took some high speed footage of a Autoloader firing underwater

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Nice work, pretty cool!

Looks like the shell casing barely made it out of the autoloader, but it did.

I wonder if that hammer fall bubble is from the internal mechanisms moving quickly, or from the primer, as you suggest.
 
Most excellent video, I don't know about the science involved but that video is crazy fun to watch.....thanks for risking your handguns and equipment. I believe you've found your calling and should pursue it!!
 
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And now for something COMPLETELY Different... way kool... I am forwarding that one to some friends that make a living with a camera... this is pretty creative stuff..

Longer tank, to allow for a follow up shot and to track the bullet path (Internal AND External ballistics underwater).... would have been cool.. but dang man, that was nice... Good work....
 
I did the best I could with the resources at my disposal. There were several other things I wish I could have tried... but I simply ran out of time and money! Still, the point was to do something unique and extremely thought provoking. I'm sure this sort of thing will become normal soon. I was really amazed at how inefficient the revolver was.
 
I'm curious as to whether the water in the barrel created some level of resistance to the bullet travel to cause the gas to escape out the rear (on the auto).

Interesting to see gas escape in the same manner in the revolver, I would have expected the cylinder/barrel gap to be enough of a release to prevent that.

I wonder what my FA in .454 Casull would do? It is stainless so it would be cool in water (I would remove the nice wood grips first, though). I would also get about 100 yards away as well since there certainly would be nothing left of the aquarium.

Dan
 
What kind of revolver is that? I ask because, from what I know about revolvers (relatively little) is that one ingredient for a superior quality revolver is how well the cylinder face mates with the opening of the barrel. If its a really tight fit, isn't that something that makes the revolver, well....better?

as I remember, this was something that the colt python/anaconda/other snake revolvers acclaimed, was a very tight tolerance in this regard.

it'd be interesting to compare something like, an old webley revolver with something that is very high quality with tight tolerances, to compare the amount of escaped gasses from the cylinder.
 
MrIzhevsk said:
What kind of revolver is that? I ask because, from what I know about revolvers (relatively little) is that one ingredient for a superior quality revolver is how well the cylinder face mates with the opening of the barrel. If its a really tight fit, isn't that something that makes the revolver, well....better?

as I remember, this was something that the colt python/anaconda/other snake revolvers acclaimed, was a very tight tolerance in this regard.

it'd be interesting to compare something like, an old webley revolver with something that is very high quality with tight tolerances, to compare the amount of escaped gasses from the cylinder.
Click to expand...

If you are asking about mine, it is a Freedom Arms Model 83 in .454 Casull. The barrel to cylinder gap is less than .001 since I could not get a feeler gauge blade of that thickness to fit in there (when it was brand new).

2990352660053667879S600x600Q85.jpg


Dan
 
That was very interesting.

I've read the pistol bullet would leave the bbl before the slide cycle started, but seeing it was different than believing it. I suspect the resistance of the 'water' vs. 'air' made some difference in the action movement, but your video is instructive.

It would be interesting to know the differences using a "slow" powder vs a very "fast" powder at the same muzzle velocity----easy for me to say.:rolleyes:

Thank you again---neat experiment
 
I think the cylinder gap on the revolver has a lot to do with the Degree of inefficiency of a revolver underwater.

I have no idea what make of revolver that was, but i would think, just looking at it's design and construction, maybe a Clerk, or similar... in relation to a Colt or a Smith, the cylinder gap would be akin to a bathroom door..

Also the additional resistance of the water acting on the face of the bullet WOULD force additional gasses through the cylinder gap. It is basic physics. Water is 800 times more dense than air... on another trivial, but related note, sound travels 20 times faster underwater..And as water does NOT compress, also farther.. taking ear protection under water to a whole new level of "what do we do now?"

The lock time on the semi auto would also be effected somewhat, but not enough to truly hinder its function in a straight blow back design.. the only real problems would be in gas operated systems.. this is why most all AR/M4's in use by SpecOps folks are gas rods conversions. A slug of water in a gas tube is a major uh-ohh..

Again...Way kool video... love it..
 
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