Are they not extracting because they are stuck in the chamber? Or are they not grabbed by extractor?
G
Ok so I have put together my first build. I have a criterion lite varmint 300 mag barrel and I used Forster go/no go guages to set headspace. Keep in mind this the first time I have done this. When I put the guages in my bolt would not extract them I thought maybe it was just the guages so I put some cartridges in and it won't extract them either. The case just stays in the chamber. What did I do wrong?
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Are they not extracting because they are stuck in the chamber? Or are they not grabbed by extractor?
G
Check to see whether you lost the detent ball.
G
Possibly. If you stopped screwing in the barrel before the gauge reached the bolt face, then it's possible that is the reason. I have set the headspace on almost all of my builds with the bolt head fully assembled. It hasn't been a problem, however I was always sure the gauge was snug against the bolt face and was extracted by the extractor.
I will take everything apart and try again
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When you try to close the bolt on the no-go gauge, will it extract it?
The extractor most likely did not go over the rim of go gauge, head space is excessive & needs reset.
I love a happy ending!
I'm glad you tested it so thoroughly before firing that Win Mag! On the off chance the firing pin hit the primer, that could have been very dangerous.
Put it on a rest with a sandbag lying on top. Attach a long string to the trigger; load a round, back up as far as the string allows, then pull.
Last edited by Robinhood; 08-16-2016 at 08:16 PM. Reason: Added Quote
The Dunning-Kruger effect is alive and well.
That was not the point of my suggestion. It was in reference to the post prior to mine using a long piece of string to test fire with a loaded round. JMHO but I would never test fire a gun with a loaded round that you aren't sure if the head space is correct.
But to answer your question, a light or no primer strike might be an indicator of poor head space.
How would this test for head space issues?
Moving the shoulder forward....Not in my rifle.
The Dunning-Kruger effect is alive and well.
Lucky for him it would never have hit the primer. I takes quite a bit of force to get a case behind the extractor. That's what the lead in chamfer is in the receiver for. In the op's case, it never had the opportunity to do its job.
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