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Old October 26, 2017, 17:43   #1
Atarget
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Question Bolt face to cartridge tolorance

Building another bolt gun base on the Remmy 700 action and am curious about the bolt face to cartridge base gap.
The standard bolt face is .484 and a magnum face is .550 but my cartridge base
measures .534.
Now, 16 thou difference does not sound like alot but I am wondering if I should start with the .484 and open it up to closer to my base size.
Question: what should the cartridge base to face clearance be??
Thanks for any input.
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Old October 26, 2017, 18:52   #2
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I'll be following this with interest.

The magnum bf should work just fine for you 534 cartridge. Is there any way you can get a bolt to check for fit?

Would the extractor work if you opened up a .484 bf? I wouldn't think it would.
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Old October 26, 2017, 19:03   #3
gunplumber
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not really sure on that since I believe the ejector as may not be optimally positioned, but there is the option of going with a PTG replacement bolt with the M16 type extractor.

I was curious about changing bolt faces, although more slightly, to do a 5.45x39 on a .223 Remy, but I never did anything with it.
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Last edited by gunplumber; October 26, 2017 at 19:21.
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Old October 26, 2017, 19:10   #4
Atarget
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True Mark, this will be another build using the PTG custom bolt. Cartridge for this one is the 33 Nosler.
Built and blueprinted a short action for the 22 Nosler and have to say I was impressed with this little round!
Seems Im collecting the Nosler family now in addition to the others I've built.
Oh, forgot to mention that I will be using a Sako extractor.
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Old November 21, 2017, 10:17   #5
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So this is a thread from another site where I asked about bolt to cartridge clearance. Pretty much found the answer to be, if it fits and can extract it's good to go.

http://forum.accurateshooter.com/thr...#post-37090773
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