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Tony
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Topic: Am I checking the headspace correctly Posted: September 15 2009 at 3:55am |
Hello Everyone
I need some help bad.
I need to know if I am checking the head space on my enfield correctly?
I
bought 1 Go 1 No Go and 1 Field gauge I first took the bolt out and
took the extractor out of the bolt head then put the bolt back in and
put each of the gauges in the barrel and closed the bolt .
Yes
the bolt closed all the way on all 3 of the gauges the bolt Handle\Knob
closed all the way to the wood I did not force the bolt to close it
didn't take much for it to close.
From what I have heard and read that tells me all of the have bad head space and are no good.
Am I correct in what I am saying.
Thanks gpat001
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Rottie (PitBulls dad.)
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Tony
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Posted: September 15 2009 at 3:56am |
A "Go" gauge is the gauge that is used to measure minimum headspace.
When you place the "Go" gauge in the rifle and close the bolt, the bolt
should close and lock easily and completely. If the bolt does close successfully then this tells you that
the firearm has at least sufficient headspace. It may still have
excessive headspace, but that is determined by the "No-Go" gauge. If the bolt will not close on the "Go" gauge then you may not
have sufficient headspace. This means you do not have enough headspace
to chamber a cartridge properly and can damage the rifle if you force
the bolt to close. - Clean the face of the chamber. There may be unseen gunk and dirt at
the face of the chamber. I have owned many Mosin-Nagant rifle and
carbines that at first were very difficult to chamber a cartridge. Only
later did I discover (with the help of a flashlight) that there
was gunk and dirt fused to the face of the chamber. Gunk and dirt that
is so dark and hardened that at a casual glance, and without the aid of
a very direct and bright light, it can be easily overlooked. After it
is successfully cleaned and/or removed then it is quite possible you
have eliminated the headspace problem and the "Go" gauge check should
be repeated. If the same results occur then.....go to the second fix (below).
- Take it to a gunsmith. You need to have the rifle looked at by a gunsmith and the rifle will need to be modified or adjusted (possibly a chamber reaming, replace bolt parts, or moving the chamber face of the barrel closer to the bolt.) in some way to compensate for the lack of headspace.
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Rottie (PitBulls dad.)
“If electricity comes from electrons, does morality come from morons
Born free taxed to death!!!
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Tony
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Posted: September 15 2009 at 3:57am |
"No-Go" gauge
A "No-Go" gauge is the gauge that is used to measure the maximum
allowed headspace. When you place the "No-Go" gauge in the rifle and
close the bolt, the bolt should not close and lock. If the rifle does
close on the "No-Go" gauge you may have a problem that needs to be
tended to by a gunsmith and may be an unsafe weapon to fire.
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Rottie (PitBulls dad.)
“If electricity comes from electrons, does morality come from morons
Born free taxed to death!!!
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Tony
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Posted: September 15 2009 at 3:58am |
"Field" gauge
If the rifle fails the "No-Go" gauge then you should measure using a
"Field" gauge. A "Field" gauge is used to measure the largest possible
safe headspace dimensions. When you place the "Field" gauge in the
rifle and close the bolt, the bolt absolutely should not close
and lock. If the rifle does close on the "Field" gauge you have a
problem that needs to be tended to by a gunsmith and an unsafe weapon
to fire.
If the bolt closes on a "No-Go" gauge but does not close on the
"Field" gauge this means you have a rifle that has excessive headspace
but is safe to shoot. Basically it will stretch the heck out of brass
and good luck trying to reload
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Rottie (PitBulls dad.)
“If electricity comes from electrons, does morality come from morons
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Tony
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Posted: September 15 2009 at 4:00am |
What CM said. Can you tell us what Enfield you have, and what gauges
you purchased? Some of the gauges are to Sammi standards, not military
standard which is a little more generous. If the rifle is a No. 4, what
is the number on the bolthead?
Ed
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Rottie (PitBulls dad.)
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Tony
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Posted: September 15 2009 at 4:01am |
If you are checking with Saami gauges then get yourself at least a
milspec field gauge. You may find that it will be ok with this gauge.
When checking you are only looking for the slightest "feel". It
is possible to push the bolt handle down sometimes on a rifle that is
headspaced correctly, this does the gauge no good at all.
Make sure you are closing the bolt with the trigger pulled back in the fired position.
Does the serial number on the bolt match the rifle? If not then you should check the fit of the bolt first. Arrowmark tool and gauge from Australia make exact replicas of the military gauges.
They are sold in the U.S but I dont know where. Go to their website.
Last time I looked they were about $105 Aust a set.
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Rottie (PitBulls dad.)
“If electricity comes from electrons, does morality come from morons
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Tony
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Posted: September 17 2009 at 8:36pm |
http://www.cruffler.com/trivia-October99.html
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Rottie (PitBulls dad.)
“If electricity comes from electrons, does morality come from morons
Born free taxed to death!!!
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