Trivia question :what caused this neck to part

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Strange, the military glues their ammunition together with Bitumen.
I wax the bullets I intend to load and magazine store to keep them from cold welding to the case neck.

Only 8 years storage?

Well, regardless the reason, with an unused solution to the issue, that was a waste of 222 cases...:(


But it was a fun mystery. Nice thread @jasza.:thumbup:
 
jasza said:
LOL all entertaining answers thanks for participating. The reason given to me by my buddy was that when he does his resizing he puts a bit of case lube inside the neck before sizing, the lube acts like lube for a while then , after a few years , it gives up acting like lube and dries out and acts like glue. "glube". It glues the bullet to the neck. When the shot is fired, the bullet takes the neck with it for a while, and leaves the neck in the lands.

He loaded this ammo 8 years ago. He uses the oil lube, not the dry lube.

The solution is to dry the neck out after sizing before loading, or use a different lube, or shoot your ammo quicker, he owns too many guns so only gets to shoot this one every few years, so he should consider owning less guns.

If you suspect you might have this problem then just put them all back in the press and seat the bullet by a thou. sure you will increase the jump a bit but it breaks the grip of the glube.

The puzzling thing for me, is my friend seemed to know all of this, he knew exactly what happened and why and how to fix it, and yet he still arrived at the range day without taking any remedial action. Maybe he was just trying to give us all an object lesson!
Click to expand...
I was going to say Allahu Akbar or improper annealing but desiccated wet lube seems logical, too. In computing they call that "stiction." Lithium grease in particular packed into spinning disk assemblies can get hot and run out of bearing surfaces, leaving behind a thin layer of non-lubricating grease residue. When those disks sit for too long - a few days is all that's needed - stiction is the result. Same thing with sewing machine motors - heat causes the oil to break down, run out, and desiccate, losing its lubricating abilities and it becomes a glue instead of a lubricant. Find out if he stores his ammo long term in a hot but dry environment. It could be it's just baking for too long. Or, perhaps we should call it braising - long, slow heat.
 
243winxb said:
Vinegar needs to be deactivated, or brass turns brown & becomes brittle.

Old NRA- 1 pint of water, 1 cup of white vinegar, 1 tablespoon of salt, and 1 teaspoon of detergent". Mix the solution in container. Shake 10 minutes with brass. Rinse 10 minutes clean water. Sun dry. This was printed in an NRA reprint of loading for the 45 acp many years ago.

Results over time photo.View attachment 985019 LC brass.
Click to expand...
That's pretty much how I handle cleaning cases.
I baking soda my brass after doing the vinegar/soap wash.

So far the only time I've lost cases I think it's just due to work hardening.
 
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