Broken extractor

[Ironworker]

6mm Creed I've worked up to 41grs of H4350 behind a 115 DTAC Lapua Small rifle primer brass. I've fired this load numerous times out of this action in the hot Nevada desert. Zero problems. I've since changed stocks from a Chassis to a Manners LRH stock and had it pillar bedded.(What difference could that of made?) Shooting yesterday in 33-degree weather, I fired one shot. The Bolt lift was extra hard. I felt the crunch of the extractor breaking, and out came the bolt with a stuck case in the chamber, but there was NO blown primer. I pulled a couple of bullets, and the weight was what it was supposed to be.

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[rijndael]

Is it possible you left some cleaning fluid or oil in the chamber? It will make it seem like a normally good load has excessive pressure because the pressure is increased on the bolt face.

 

[Ironworker]

Is it possible you left some cleaning fluid or oil in the chamber? It will make it seem like a normally good load has excessive pressure because the pressure is increased on the bolt face.

I haven't cleaned the gun. Maybe when the stuck case is punched out, a clue will be found

 

[DaveTooley]

Pressure on the bolt face doesn't destroy extractors. I don't buy into the adage of a damp chamber increases bolt thrust to a dangerous level. Look where we get case head separations. Well up into the chamber. Pressure is pressure.
What type of extractor? Any changes in loading componets.
When you get the case out post some pics. Take note of much force it took to dislodge the case.

 

[whatsupdoc]

How do you dispense powder charges? It is possible that you made a simple error
when charging the cases.

 

[rijndael]

What type of extractor?

He posted on another forum that it was a Terminus Apollo action. That has a mini M16 extractor.

 

[DaveTooley]

I've seen Sako's break from being installed out to far/deep and touching the extractor groove. Same thing could have happened here.

 

[sksshooter]

Could the extractor ossibly been bound up against the case head and not engauging rim? Could give added bolt pressure and a broken extractor? I had something similar happen on a model 70 270wsm. I dropped a round most of the way into the chamber and closed the bolt on it. Something felt slightly off nd i was relatively early into reloading. I attempted to open the bolt to extract the round and inspect and when i did there was no case and extractor was gone. Cant recall if i had added bolt lift but i didnt fire the round either.

 

[LHSmith]

Bedding epoxy found a place it was not supposed to be?

 

[rijndael]

Bedding epoxy found a place it was not supposed to be?

Or, release agent?

 

[Ironworker]

How do you dispense powder charges? It is possible that you made a simple error
when charging the cases.

It's possible

 

[K22]

I've only ever broke one extractor. It was on a Rem 700, 308 many years ago.

It was a case of dumb and dumber. I was using range salvaged cases which I reloaded. Chambering was stiff which should have warned me to stop, but I shot the round anyway. The case stuck in the chamber, and I had use excessive force to open the bolt and, in the process, tore the extractor.

 

[whatsupdoc]

I have done the opposite I was charging on a digital scale and checking on a second
digital scale every 5th round.

Charge was supposed to be 43.2 grains, I have loaded this charge hundreds of times.
My bullets were all shooting crazy low at 400 to 1000 yards, turns out I charged
every case at 42.3 grains and checked every 5th charge.

100% brain fart

Now I write the charge on a post-it and stick it on the scale.

 

[SeabeeKen]

I don't buy into the adage of a damp chamber increases bolt thrust to a dangerous level

It does when the round is already over pressure. Case cant grip chamber walls. PO Ackley tested actions to destruction in his book.

 

[DaveTooley]

It does when the round is already over pressure. Case cant grip chamber walls. PO Ackley tested actions to destruction in his book.

Well sort of. Destruction means exceedingly high pressure. Like in the neighborhood of 120K+ PSI. At that point moisture content is irrelevant. Modest pressure and a moist chamber mean little. I can't tell you how many times I've shot hunting rifles that were completely soak. That includes the chamber and bore. You can't spend a day on the hill in a Scottish gale and everything not get totally soaked. Many lube the front of cases when fireforming. Regardless of chamber condition the case expands to fill everywhere from the bolt face to the end of the neck. If that's not what occurs why do we FL dies? Griping the sidewalls comes into play with brass flowing forward to form the donut and case length growing. YMMV

 

[Ironworker]

I extracted the case and, sure enough, a bright, shiny mark on the case head.

 

[DaveTooley]

I extracted the case and, sure enough, a bright, shiny mark on the case head.

Is that were it flowed into the extractor slot?

 

[Ironworker]

Is that were it flowed into the extractor slot?

Yes. Bolt is on its way back to Terminus now, they said "Send it."

 

[Dusty Stevens]

Yes. Bolt is on its way back to Terminus now, they said "Send it."

Then they said “get an impaaaact”

 

[Ironworker]

My Terminus bolt is fixed and headed back to me.