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throat erosion |
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colreed 
Grunt 
Joined: Feb 15 2016 Location: Hockley, TX Status: Offline Points: 452 |
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 Topic: throat erosionPosted: Apr 17 2020 at 1:44pm |
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How important is it to measure throat erosion, and which measuring tool is best recommended? Thanks
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"Rescuing one animal may not change the world, but for THAT animal, THEIR world is changed forever"
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W5USMC
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Joined: Apr 29 2017 Location: Missouri Status: Offline Points: 2959 |
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Posted: Apr 17 2020 at 1:52pm |
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Could be wrong but I don't think that throat erosion is much of an issue with carbines. I think it becomes an issue with rifles that shoot bottleneck cartridges.
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Wayne
USMC Retired NRA Life Member |
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colreed
Grunt
Joined: Feb 15 2016 Location: Hockley, TX Status: Offline Points: 452 |
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Posted: Apr 17 2020 at 1:54pm |
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thanks, Wayne.
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"Rescuing one animal may not change the world, but for THAT animal, THEIR world is changed forever"
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W5USMC
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Posted: Apr 17 2020 at 2:10pm |
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Here is a CMP thread on the subject.
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Wayne
USMC Retired NRA Life Member |
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colreed
Grunt
Joined: Feb 15 2016 Location: Hockley, TX Status: Offline Points: 452 |
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Posted: Apr 17 2020 at 3:57pm |
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I appreciate the link. It seems to answer the question just fine. Not to worry about TE with the carbine.
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"Rescuing one animal may not change the world, but for THAT animal, THEIR world is changed forever"
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Donnie
On Point 
Joined: May 31 2018 Location: Newburgh, IN Status: Offline Points: 336 |
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Posted: Apr 18 2020 at 4:20am |
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W5USMC, that's an Informative link on TE. Thanks for sharing.
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sling00
Hard Corps 
Joined: Apr 21 2016 Location: Tennessee Status: Offline Points: 941 |
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Posted: Apr 18 2020 at 7:33am |
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FWIW, Kuhnhausen's Shop Manual has on page 90, Para 4 on "Chamber throat - Chamber throat and breech bore area wear/erosion should be within ordnance diametrical specifications of: .087" included throat taper per inch from .3135" basic bullet seat diameter to point of intersection with the .308" + .002" bore diameter..." It goes on to say measure using breach bore gauge or measuring a Cerrosafe chamber cast. Seems to be more of a potential accuracy issue.
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GotSnlB28
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Joined: Jan 01 2016 Location: WI Status: Offline Points: 896 |
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Posted: Apr 18 2020 at 9:22am |
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I seem to remember that CMP included throat measurements on the hang tags of carbines in the most recent release (2016?). I don't own a throat gauge and have never paid attention to it.
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painter777
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Joined: Feb 18 2016 Location: Central MI Status: Offline Points: 1718 |
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Posted: Apr 18 2020 at 12:47pm |
Good Call GotSnlB28 From a Completed Auctions search. Picture shows a TE reading.  |
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GotSnlB28 wrote: