Headspace Issue?
- Thread starter geraldgee
- Start date
Well, "the builder" has missed getting the headspace right....and turned him loose with a rifle that has a rougher than needed chamber and what appears to be an oversized firing pin hole in the bolt....I don't know if I'd be in any rush to contact him or not!!!! I think at this point I'd be contacting a real gunsmith.[/QUOTE]
Very class act
Is there any chance a well meaning fellow attempted to lap his lugs after the build? There's not much change between just shy of no go and one piece of tape and a no go
Very class act
Is there any chance a well meaning fellow attempted to lap his lugs after the build? There's not much change between just shy of no go and one piece of tape and a no go
No chance whatsoever!
Very class act
Is there any chance a well meaning fellow attempted to lap his lugs after the build? There's not much change between just shy of no go and one piece of tape and a no go[/QUOTE]
Not sure what you mean by "class act"....if it was meant to be a compliment then thanks...if you were being facetious then I would submit that the only "class act" in this show is the person that cant set headspace properly and then GIVES it to the owner to go shoot it!!!!
....the road to hell was paved with good intentions as they say. I have lapped many bolt lugs, but I always do it BEFORE I set the final headspace. Still, I seriously doubt that you could lap away several thousandths and get it out of spec unless the person doing the lapping was extremely determined.
Typically, now maybe this was just the way I was taught, when setting headspace you want the empty bolt to just cam over on the go-gauge. That way you have a minimum length chamber. They only ever get longer from wear, etc. so it should be on the minimum. That leaves normally .004" to go before it is felt camming over on a no-go gauge. He is saying this one falls shut {closes} on the no-go so it's worse.
All that said, I have seen bolt lugs machined so poorly that only one made contact { no it wasn't the receiver!!!} and it was not until the bolt was set up and had several thousandths ground off to correct the lugs and get them both to the same level that there was bilateral contact. If something like this went down.....just goes to show, anything is possible I guess. Again, this is why I lap/correct the lugs before I set final headspace.
jepp2
Gold $$ Contributor
On some Remington rifles they chamfer the bolt face of the hole for the firing pin. It will show as a cratered primer when it isn't. Just another possibility.
The first thing I would do is measure the shoulder to base dimension on the unfired factory rounds and on the fired rounds to see how much the shoulder has shifted forward. It's also enlightening to measure the Go and No Go gauges and see how they compare to the fired and unfired cases. I just measured a bunch of different brands of 223 ammo and there was a wide variation. Up to .005" from the loosest to the tightest.
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