Help!

[Rockydoc]

The neck of a 30-30 Win case separated while neck sizing in a Lee collimator neck size die. The neck is stuck on the mandrel of the die. I have sprayed with Kano Kroil and heated the neck with a mini butane torch and grasped the neck with needle nose pliers and levered against the mandrel retainer....to no avail....no joy.

I solicit suggestions.



Rocky

 

[Brad]

Can you carefully get a spiral cut started on the exposed end of the case?

That might allow you to grab the tag end and pull at an angel allowing the cut to spiral around the rest of the neck until it was feee from the mandrel.

 

[CWLONGSHOT]

Well crap!! Is that as far ad the die comes appart?

CW

 

[Rockydoc]

Well crap!! Is that as far ad the die comes appart?

CW

It is when there is a cartridge neck frozen onto the mandrel.

 

[Rockydoc]

Can you carefully get a spiral cut started on the exposed end of the case?

That might allow you to grab the tag end and pull at an angel allowing the cut to spiral around the rest of the neck until it was feee from the mandrel.

How do I start a spiral cut on the case neck?

 

[462]

Over night in the freezer? The two dissimilar metals contract, and possibly allow enough clearance between the case and the mandrel to allow you to judicially tap the mandrel out the top?

 

[CWLONGSHOT]

It is when there is a cartridge neck frozen onto the mandrel.

Yea, I wondering if you cannot just push it rest of the way off with a longer case like a 300 mag..(if "top" came off)

 

[JWFilips]

Wish I can see this closer!
I had a bunch of bad things over the years... All cured with a padded vice and percussive maintenance

 

[BudHyett]

Cerrosafe, fill the neck and drive out from the top. I've done this several times over the years. If you do not have Cerrosafe, you might try Linotype alloy.

 

[Jeff H]

I'm with @CWLONGSHOT on this one. All that keeps the mandrel from falling through is a very tiny lip on the top of the mandrel, so the hole the mandrel goes through is pretty close to the diameter of the mandrel - maybe enough so that the hole will stop the case mouth as you tap the mandrel "up" through the hole. Risky for the decapper pin, but well-centered, light taps, especially after the Kroil has been sinking in could possibly do it.

If the case neck moves some, but hangs up, stop, push the mandrel back in and file a weak spot on one side of the neck. If you get close enough that there's just a thin bit of brass on one side, it can loosen or lessen its grip, or allow it to be peeled off. Had to get steel bushings off several bolts on a Jeep suspension this way this spring - but I used a grinder. A file would be more appropriate/safer for the mandrel in this case.

 

[462]

As far as tapping on the decapping pin, drill an appropriate size hole in a piece of wood and whack on the wood. Kind of like removing a Mauser firing pin, only without the whacking.

 

[Matt]

Take a sharp knife and carefully split the neck length wise as far as you can. The thin neck of a .30/30 case (plus sounds like you annealed it ) should cut easily; just saw carefully with your knife. When the cut is almost through the case neck you should be able to lift the edge and complete the split. Hopefully you can pull the neck off with plyers.

 

[Ian]

File a flat on the neck almost all the way through, then get under the thinnest part with a pick (dental instrument?) and start splitting the neck and peeling it back. Get hold of the edges with nodleneese pliers and twist so it tears back spam-can style. With any luck and some "English" on the pliers you can coax the tear into a spiral which will get below the cone and eventually to the bottom. The mandrels fit the caps pretty close, but trying to beat the pin out will likely just make the brass wedge and bite the mandrel even worse.

 

[RicinYakima]

Three corner swiss file would be appropriate, I would think.

 

[fiver]

it's a lee die.
call them and mail it in, or just accept the new part they offer.

 

[Rockydoc]

This has been kinda of a tempest in a teacup. After an hour or so after soaking with Kroil I put the tip of the decapping pin on the bench top and tapped on the part that houses the mandrel with my delrin tipped mallet and the case neck slipped off.
Problem solved.

Kano Kroil is great stuff!

 

[Petrol & Powder]

File a flat on the neck almost all the way through, then get under the thinnest part with a pick (dental instrument?) ...........

Now where on earth is he going to find a dental instrument..........oh wait....