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Jul 28th, 2025
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Joined: Jan 2006
Posts: 15,462 Likes: 89
Sidelock
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Sidelock
Joined: Jan 2006
Posts: 15,462 Likes: 89 |
I guess I've never really understood the determination of parameters for proof testing. If a a piece of machinery is built to withstand specific stress limits, how do you determine how far beyond those limits should be considered safe? To me, it's kinda like taking my new car out and revving the engine a few thousand RPM beyond the redline just to make sure everything's o.k. If it was o.k. before, it very well might not be afterward. I'd be interested in knowing how many guns failed proof testing during the lifetimes of the Parker Brothers, Smith, Fox, or Ithaca companies. Bill Frech How can they fail proof testing when they were never tested...
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Joined: Nov 2004
Posts: 433
Member
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Member
Joined: Nov 2004
Posts: 433 |
I guess I've never really understood the determination of parameters for proof testing. I'd say 350 years of experience with proof testing might have something to do with it.
"Serious rifles have two barrels, everything else just burns gunpowder."
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Joined: May 2008
Posts: 8,158 Likes: 114
Sidelock
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Sidelock
Joined: May 2008
Posts: 8,158 Likes: 114 |
Mike- if you are looking at API coded pipe- you are very close at 60,000 psi- Most popular schedule pipe welding rod is Lincoln 5-p (5 x factor0 it is an AWS 6010 code rod- the first two digits are the 000 - after stress relieving- so the Minimun tensile of the weld is 60,000= Lincoln HYP rod "we called it Hippie Rod" is AWS 7010 code- 70,000 tensile as stress relieved- Good call there Amigo-
"The field is the touchstone of the man"..
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Joined: Apr 2008
Posts: 640
Sidelock
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Sidelock
Joined: Apr 2008
Posts: 640 |
I think that in the states we put too much emphisis on proof testing. It does not apply here so why do WE get so wrapped up in that god awful crap. Measure wall thickness, chamber length and see if everything is in order. Then buy or sell like any other gun. That would be in the world according to me. I guess what I'm saying is leave the proof system on the other side of the pond.
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Joined: Apr 2005
Posts: 1,698 Likes: 46
Sidelock
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Sidelock
Joined: Apr 2005
Posts: 1,698 Likes: 46 |
The trouble with common sense is that it is not very common
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