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How to shatter an objective lens on a NightForce scope... Login/Join 
Yeah, that M14 video guy...
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posted
This was forwarded to me by our local long range group. These guys are local to me.



Tony.


Owner, TonyBen, LLC, Type-07 FFL
www.tonybenm14.com (Site under construction).
e-mail: tonyben@tonybenm14.com
 
Posts: 5396 | Location: Auburndale, FL | Registered: February 13, 2001Reply With QuoteReport This Post
Nullus Anxietas
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Yikes! Frown



"America is at that awkward stage. It's too late to work within the system,,,, but too early to shoot the bastards." -- Claire Wolfe
"If we let things terrify us, life will not be worth living." -- Seneca the Younger, Roman Stoic philosopher
 
Posts: 26009 | Location: S.E. Michigan | Registered: January 06, 2008Reply With QuoteReport This Post
hello darkness
my old friend
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That sucks!
 
Posts: 7724 | Location: West Jordan, Utah | Registered: June 19, 2007Reply With QuoteReport This Post
Little ray
of sunshine
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I would have thought the lens would have to be much hotter, but I guess that propellant can come out very cold.




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Posts: 53121 | Location: Texas | Registered: February 10, 2004Reply With QuoteReport This Post
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Yeah, with the can upside down, the liquid comes out instead of just gas. Pretty much like dry ice.

We use the stuff a lot at work (IT) for when computers come in from the field. Even upright, you can get bursts of the 'liquid' which converts to gas pretty quickly.




The Enemy's gate is down.
 
Posts: 15268 | Location: Spring, TX | Registered: July 11, 2011Reply With QuoteReport This Post
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you know you're having a bad day when...

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Proverbs 27:17 - As iron sharpens iron, so one man sharpens another.
 
Posts: 8940 | Location: Florida | Registered: September 20, 2004Reply With QuoteReport This Post
Fighting the good fight
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quote:
Originally posted by P250UA5:
Yeah, with the can upside down, the liquid comes out instead of just gas. Pretty much like dry ice.


Yep.

You can break open cheap metal locks (bike locks, padlocks, etc.) using a can of compressed air and a hammer. Turn the can upside down, douse the lock with the freezing liquid, then quickly hit it with the hammer. The brittle frozen metal shatters/snaps off.
 
Posts: 32490 | Location: Northwest Arkansas | Registered: January 06, 2008Reply With QuoteReport This Post
Web Clavin Extraordinaire
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Well I learned something interesting today....


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Chuck Norris put the laughter in "manslaughter"

Educating the youth of America, one declension at a time.
 
Posts: 19837 | Location: SE PA | Registered: January 12, 2001Reply With QuoteReport This Post
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The propellant is often a refrigerant, and when they go from high pressure to low pressure they get really cold...
 
Posts: 4701 | Location: Indiana | Registered: December 28, 2004Reply With QuoteReport This Post
The Unmanned Writer
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That compressed air in a can ain't all it's cracked up to be...






Or is it?






Life moves pretty fast. If you don't stop and look around once in a while, you could miss it.



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Posts: 14034 | Location: It was Lat: 33.xxxx Lon: 44.xxxx now it's CA :( | Registered: March 22, 2008Reply With QuoteReport This Post
Yeah, that M14 video guy...
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What's amazing is that if you watch the whole video, the shooter continued with the match and shot quite well, in spite of the disaster.

Tony.


Owner, TonyBen, LLC, Type-07 FFL
www.tonybenm14.com (Site under construction).
e-mail: tonyben@tonybenm14.com
 
Posts: 5396 | Location: Auburndale, FL | Registered: February 13, 2001Reply With QuoteReport This Post
Frangas non Flectes
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Yeah, that’s some rough luck, but good on the shooter for persevering and shooting a great match even with a shattered lens.

I can’t see where I’d need this information for my own purposes, but it seems like an important thing to know and tuck away nonetheless. Thanks, Tony. Smile


______________________________________________
Carthago delenda est
 
Posts: 17110 | Location: Sonoran Desert | Registered: February 10, 2011Reply With QuoteReport This Post
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That's cool he finished.

Yeah physics, gotta suck the fun out of everything.
The glass got hit with a blast of about -100F as the liquid turned to gas.

It's how AC systems work, drop the pressure and it drops the temp when it evaporates.
Blow air over the evaporating freon inside the evaporator and out comes cold air.

I saw a valve break on a 3,000 Gal LPG tank.
By the time it got shut off the entire back end was a solid block of ice.
 
Posts: 1476 | Location: Portland Oregon | Registered: October 01, 2011Reply With QuoteReport This Post
Not as lean, not as mean,
Still a Marine
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I wish they got a view through it in that video, I'm curious how much it actually distorted the view.




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Posts: 3352 | Location: Southern Maine | Registered: February 10, 2008Reply With QuoteReport This Post
delicately calloused
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I’ll bet those auto glass guys could fix that right up.



You’re a lying dog-faced pony soldier
 
Posts: 29682 | Location: Highland, Ut. | Registered: May 07, 2008Reply With QuoteReport This Post
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