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Author Topic: 22 LR chamber pressure.  (Read 1149 times)

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Offline mechanic

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22 LR chamber pressure.
« on: October 15, 2012, 11:37:37 AM »
I just had a fellow stop by to say hello, and as he was about to go, he said "oh by the way", and brought something out of his car.  It was a piece of thinwall tubing that he was using to fashion a "zip" gun.
 
I told him that was the dumbest thing he had ever started to do, and to throw it away asap, it would be rough digging all that metal out of his hide and face.
 
He looked a little surprised, and said it was just a puny .22.
 
I looked up the specs. to show him....22 LR    24,000 psi.
For a comparison, 12 ga. 2 3/4                       11,500 psi.
 
Now I know that the 12 guage has a larger surface area and all that, but 24,000 psi is still just that.
 
He left bent on finishing his little zip gun.......I hope he isn't badly hurt... >:(
 
Ben
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Offline Shu

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Re: 22 LR chamber pressure.
« Reply #1 on: October 15, 2012, 12:59:01 PM »
Well you warned him, it's on him now.
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Offline Ranger99

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Re: 22 LR chamber pressure.
« Reply #2 on: October 15, 2012, 01:21:26 PM »
hope he don't mind orange coveralls
for a few years. . . . :(
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Offline Conan The Librarian

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Re: 22 LR chamber pressure.
« Reply #3 on: October 15, 2012, 02:23:08 PM »
Shrapnel, little bitty ones, are the danger with these things. My childhood friend made one and lost his left eye. Also, getting caught with one is not a good way to impress police.

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Offline 45-70.gov

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Re: 22 LR chamber pressure.
« Reply #4 on: October 15, 2012, 02:27:11 PM »
a real gun is cheaper than a trip to the emergency room......or jail
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Offline mechanic

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Re: 22 LR chamber pressure.
« Reply #5 on: October 15, 2012, 02:43:28 PM »
This fella' has money, and guns, just not intelligence.
 
Ben
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Offline FPH

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Re: 22 LR chamber pressure.
« Reply #6 on: October 15, 2012, 02:45:51 PM »
Quote from: mechanic on October 15, 2012, 02:43:28 PM
This fella' has money, and guns, just not intelligence.
 
Ben

Can't buy that
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Offline JustaShooter

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Re: 22 LR chamber pressure.
« Reply #7 on: October 15, 2012, 02:55:02 PM »
Quote from: Ranger99 on October 15, 2012, 01:21:26 PM
hope he don't mind orange coveralls
for a few years. . . . :(

Any particular reason you say that?  It isn't a crime to blow yourself up with a homemade gun...  Stupid yes, but not a crime.

Just a Shooter
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Offline Ranger99

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Re: 22 LR chamber pressure.
« Reply #8 on: October 15, 2012, 03:50:41 PM »
making a zip gun is a crime.
a federal crime as well i think.


oh well. . .it's his a&&
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Offline CannonKrazy

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Re: 22 LR chamber pressure.
« Reply #9 on: October 15, 2012, 03:52:58 PM »
I have seen a few made back in the late 60's from old car antenna, a rubber band and a file. We had a few characters in the neighborhood that liked to tinker. Never heard of anyone getting hurt but I was really young at the time also.
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Offline mcwoodduck

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Re: 22 LR chamber pressure.
« Reply #10 on: October 15, 2012, 05:11:07 PM »
My concern is the diameter of the pipe.
If the hole is too large it will not chamber.
Why did he not start out with an old or new 22 barel blank to make it?  and then if he wants it thinner turn it down leaving the chamber area thick to make a proof of concept.
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Offline JustaShooter

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Re: 22 LR chamber pressure.
« Reply #11 on: October 16, 2012, 04:26:17 PM »
Quote from: Ranger99 on October 15, 2012, 03:50:41 PM
making a zip gun is a crime.
a federal crime as well i think.

State laws vary, but it isn't a Federal crime to make your own gun as long as you can legally own one.  There are restrictions of course - for example, if by "zip gun" you mean a smooth-bore handgun, you'll need to file a Form 1, pay the $200 making tax and comply with the provisions of the NFA & GCA (and of course, state laws for where you live).   

Just a Shooter
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Offline Ranger99

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Re: 22 LR chamber pressure.
« Reply #12 on: October 16, 2012, 06:12:00 PM »
the way i understood the original post,
the gent in question was making a zipgun
which is a non-papered illegal homemade
something like the gangs use to make
before i was born. i don't believe it was
his intent to make a firearm that one would
take in to the a.t.f. office and ask to license.
anyway, he's already set himself up for legal
action by showing it around and ultimately
he'll show it to the wrong person and wind
up incarcerated.  if anyone wants to make
one, that's none of my concern and i'll not
worry if anyone goes to jail over it.
not my problem.
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Offline mechanic

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Re: 22 LR chamber pressure.
« Reply #13 on: October 16, 2012, 06:27:08 PM »
He wouldn't call and tell me, but someone else told me he fired it remotely...string, and it split.  So maybe I  at least got him to be cautious, and maybe he's done with his foolishness....
Ben
 
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Offline Ladobe

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Re: 22 LR chamber pressure.
« Reply #14 on: October 19, 2012, 01:20:19 PM »
From personal experience can add that in the 50's early 60's with the beat some but mostly the greaser generations, while not as popular as switch blades or stiletto's, zip guns did come into play in street fights sometimes.   I got shot by one, a 22RF of some sort, but they were also made for larger caliber low pressure cartridges.  CK has it right, some were made from car antennas that on vintage vehicles were made much sturdier then than later.   I was lucky in that the one I was shot with was only an in and out flesh wound in my arm.  The alchohol my buddies poured through the hole was worse than the bullet.  Got hurt much worse by the blades a couple of times and they did take a Doc and plenty of stitches to fix.   
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Offline spooked

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Re: 22 LR chamber pressure.
« Reply #15 on: October 21, 2012, 04:39:29 PM »
Fifty some years ago had a stepbrother who used to put .22 shorts in a old .22 barrel and smack em with a hammer just to be doing it, wasn't accurate at all. Had a cousin in St. louis inna fifties usta make the .22 zip guns outa car antennas, used a piece of inner tube for the hammer spring. Whittled 'is own stocks and fired it by thumbing the hammer back and letting it slip outa 'is thumb..
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