Case head separated - damaged rifle!

[fguffey]

The claim that too much neck tension increases pressure has been around a lot longer than a month.

You have no way of measuring tension, you do not have a conversion for tension to bullet hold. I went from 45 pounds of bullet hold +/- a few to over 100 pounds of bullet hold. Pulling bullets after increasing bullet hold was impossible by conventional means meaning I could not pull the bullets with the RCBS collet puller or the Hornady cam lock puller.

And then there was the Aberdeen cold weld problem; They did not claim neck tension, but they did claim the bullet required 500 pounds + to move. Shoot them or pull them? Reloaders claim pulling the expander ball through the neck when lowering the ram moves the shoulder and increases the length of the case from the shoulder to the case head.

I have always claimed there was not one reloader on any of the reloading forums that could measure the length of the case from the shoulder to the case head before lowering the ram and after lowering the ram.

F. Guffey

[FromTheGrave]

[ojisan]

To be clear about what I said, although this may be a straight walled revolver round, it is being used in a rifle chamber that has a throat.
If the case was too long and wedged the bullet in the throat, similar to a crimping die effect, that could cause an over pressure situation.

If the mouth area of the case is stuck in the throat, that may be what is actually meant by part of the case being in the barrel.
We don't know, and some guy did something with the case and gun already so we really will never know for sure.
But if the case mouth is stuck in the throat, then that may very well be the problem.

OP, there is a good chance that your barrel is just fine, once the debris has been removed and everything has been inspected and cleaned up.
But since I can't see it, caution says that you should have a good smith take a look at it.
(Official Anti-Liability Statement).

[kcstott]

Get used to it. It gets worse. Much worse.

[kcstott]

To be clear about what I said, although this may be a straight walled revolver round, it is being used in a rifle chamber that has a throat.
If the case was too long and wedged the bullet in the throat, similar to a crimping die effect, that could cause an over pressure situation.

If the mouth area of the case is stuck in the throat, that may be what is actually meant by part of the case being in the barrel.
We don't know, and some guy did something with the case and gun already so we really will never know for sure.
But if the case mouth is stuck in the throat, then that may very well be the problem.



OP, there is a good chance that your barrel is just fine, once the debris has been removed and everything has been inspected and cleaned up.
But since I can't see it, caution says that you should have a good smith take a look at it.
(Official Anti-Liability Statement).

[ojisan]

Do you have any idea how much longer a fad CASE would need to be to jam in the throat?
How about .250” or more. And that ain’t going to happen l.

Yes I do have an idea...a very good one.
Not likely to need that much length either.
Then there's always the .357 Maximum case out there.
Who knows how carefully the reloaders did their work, including inspection of all loaded ammo.
Chit happens.
I don't buy or use "factory reloads" because my experience with them is so bad that it was one of the reasons I started handloading (and 10MM ammo was sooo expensive back in the late 80's).

[Spyder]

Where are you located? I bet one of us will have a better idea of what happened and if it is safe, than whatever 'smith' you took it to.

[J-cat]

You have no way of measuring tension, you do not have a conversion for tension to bullet hold. I went from 45 pounds of bullet hold +/- a few to over 100 pounds of bullet hold. Pulling bullets after increasing bullet hold was impossible by conventional means meaning I could not pull the bullets with the RCBS collet puller or the Hornady cam lock puller.

And then there was the Aberdeen cold weld problem; They did not claim neck tension, but they did claim the bullet required 500 pounds + to move. Shoot them or pull them? Reloaders claim pulling the expander ball through the neck when lowering the ram moves the shoulder and increases the length of the case from the shoulder to the case head.

I have always claimed there was not one reloader on any of the reloading forums that could measure the length of the case from the shoulder to the case head before lowering the ram and after lowering the ram.

F. Guffey

I do have a way of measuring tension: loaded neck diameter minus unloaded neck diameter.

A difference of .002” is sufficient to hold a bullet securely in the neck to survive feeding from the magazine and chambering without bullet setback.

We call that difference TENSION.

[fguffey]

We call that difference TENSION.

Just my opinion but I would say the 'we' you are referring to is mechanically challenged; there is something called interference fit and crush fit.

F. Guffey

[J-cat]

Interference fit does not sound as sexy as neck tension. Neither does your bullet hold. That sounds stupid much like bullet head.

[fguffey]

Interference fit does not sound as sexy as neck tension. Neither does your bullet hold. That sounds stupid much like bullet head.

Bullet hold: How much bullet hold?

You seem to believe I invented bullet hold, bullet hold goes as far back as 1954, the person that wrote the article claimed bullet crimp on a bottle neck case was a bad habit. His rational? He claimed crimping the neck on a bottle neck case could reduce bullet hold. And then? He claimed crimping the neck of a bottle neck case could bulge the case at the shoulder/case body juncture because the seating die does not have case body support.

F. Guffey

[J-cat]

Both claims are true. But the term sounds awkward.

[JagerDog]

Bullet hold: How much bullet hold?

You seem to believe I invented bullet hold, bullet hold goes as far back as 1954, the person that wrote the article claimed bullet crimp on a bottle neck case was a bad habit. His rational? He claimed crimping the neck on a bottle neck case could reduce bullet hold. And then? He claimed crimping the neck of a bottle neck case could bulge the case at the shoulder/case body juncture because the seating die does not have case body support.

F. Guffey

That's why he needed a Lee FCD.

How many holds was his bullet hold reduced by?

[FromTheGrave]

That's why he needed a Lee FCD.

How many holds was his bullet hold reduced by?

27 holds

[therealnickb]

That's why he needed a Lee FCD.

How many holds was his bullet hold reduced by?

https://www.google.com/search?client=safari&hl=en-us&ei=zuysXcX7Dtj5-gTUlYnYCg&q=bullet+holds&oq=bullet+holds&gs_l=psy-ab.3..0i22i10i30j0i22i30l2.20513.27821..29349...0.2..1.188.3563.24j12......0....1..gws-wiz.....6..0i71j33i22i29i30j0i13j0i13i30j0j0i67j0i362i308i154i357j0i131j0i10.e8X5OlGssd8&ved=0ahUKEwjFmviC_qvlAhXYvJ4KHdRKAqsQ4dUDCAo&uact=5