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.303 Headspace guages

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Cookie Monster View Drop Down
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    Posted: February 06 2016 at 6:16pm
Does anyone have any 303 British headspace guages for sale? I would like sa full set go, no go, and field. If not any combination there of will work.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ikesdad Quote  Post ReplyReply Direct Link To This Post Posted: February 06 2016 at 6:57pm
Like these ??

http://www.ebay.com/itm/Enfield-headspace-gauges-4pc-set-GO-NO-GO-FIELD-PIN-head-space-303-British-/262224668697?hash=item3d0dcee819:g:CEQAAOSwiLdWCbH7
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: February 07 2016 at 6:09am
I wonder if they're SAAMI or milspec?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ikesdad Quote  Post ReplyReply Direct Link To This Post Posted: February 07 2016 at 7:24am
Dunno. Send them a question.
That's the cheapest I've seen them.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: February 07 2016 at 7:49am
Oh I have a set of the Okie & they are MilSpec. I was just curious for anyone looking to buy so they didn't make a mistake.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote spentprimer Quote  Post ReplyReply Direct Link To This Post Posted: February 07 2016 at 5:02pm
I measured a cartridge rim thickness and then measured the headspace using plastigage + the rim thickness and made adjustments in the bolthead from that measurement.  Be sure to remove the extractor when measuring.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MJ11 Quote  Post ReplyReply Direct Link To This Post Posted: February 07 2016 at 9:22pm
Use the British DoD approved stuff.


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Canuck Quote  Post ReplyReply Direct Link To This Post Posted: February 07 2016 at 11:05pm
Where would you look to find original DoD head space gauges?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: February 08 2016 at 4:55am
E-Pay for the original gauge.
The Okies are easier & just as accurate alternative IMO.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mariner76 Quote  Post ReplyReply Direct Link To This Post Posted: February 26 2016 at 6:58pm
Re .303 headspace gauges,i got some from www.okiegauges.com in USA,they are like cent coins well made easy to use with instructions Good luck
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: February 27 2016 at 2:27pm
Yep!

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Post Options Post Options   Thanks (0) Thanks(0)   Quote AJ Dragon Quote  Post ReplyReply Direct Link To This Post Posted: April 02 2016 at 9:03am
Originally posted by Shamu Shamu wrote:

I wonder if they're SAAMI or milspec?
 
How would you tell the difference.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: April 02 2016 at 12:08pm
The thickness.

British used a different spec for gauging headspace for the .303. Basically there were 2 gauges a "too tight" & a "Too lose".

SAAMI uses a set of 3 called a "NO GO", a "GO", & a "FIELD".

Because of this there are actually 2 slightly different standards for the same round, one in Europe & another in the USA. Whats really important is the actual measurement, not what it's called. Too Tight >=< NO GO & is only really used when re-barreling to make sure the barrels shank isn't in need of a different washer for angular rotation & headspace. The average home smith only really needs the 0.074" (whatever you call it, "Gauge, fail" or "FIELD" one) but it needs to gauge an 0.074" gap not the slightly tighter SAAMI one which is 1/2 way between "FIELD" & "GO".

Both the Okie & those linked to above are MoD MilSpec, but you probably will only use the "FIELD" in practice.
"These gauges are Laser cut steel, surface ground to, .064 GO, .070 NOGO and .074 FIELD. Stamped for identification, rechecked for spec, blued and lightly oiled."
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