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couzin wrote: ↑Tue Apr 23, 2019 8:34 pm I am late to the party - but the case bulge and the rim snapped off looks like you may overgassed and possibly underbuffered. The gas pressure starts moving the casing before it has had time to shrink after firing, sometimes causing the bolt to move and tear off a chunk of case rim. Maybe...

Bitter Clinger wrote: ↑Sun Apr 14, 2019 3:41 pm

Beiruty wrote: ↑Sun Apr 14, 2019 3:15 pm

The Annoyed Man wrote: ↑Sun Apr 14, 2019 2:09 pm

Beiruty wrote: ↑Sun Apr 14, 2019 9:41 am

kayt00 wrote: ↑Sun Apr 14, 2019 8:51 am

Beiruty wrote: ↑Sat Apr 13, 2019 9:46 pm Update:
Use science, a few sec of super chilled compressed "air in a can", sprayed on the case head, made the mission way easier. One bang and it just came out.
Photos:
https://photos.app.goo.gl/8uKwduy1N7Wop ... 13OHfLBs5o
Chamber was polished too, too much black stuff came out
Photos:
https://photos.app.goo.gl/Z83ZGuc72GQoV ... 90NDHJhJJ0

Because science, glad that worked out. Any idea what caused the problem?

This is why it did not chamber:
https://photos.app.goo.gl/YBMcuyALqRo5XbJJ7

Wow! That bulge on the shoulder is alarming. Did you give the chamber a good cleaning? Also, any ideas of what caused the bulge? It might be useful to examine the next couple of dozen ejected cases to see if there’s any incipient signs of any problems

I will keep an eye. The case was like that when chambered. Why it was like that, who knows. It is a factory ammo. I cleaned and polished the chamber. See the photos in my above post.

In some of the photos from before polishing it almost looked like the chamber might have a micro-crack in it. Was that a concern as well?

The Annoyed Man wrote: ↑Sun Apr 14, 2019 2:09 pm

Beiruty wrote: ↑Sun Apr 14, 2019 9:41 am

kayt00 wrote: ↑Sun Apr 14, 2019 8:51 am

Beiruty wrote: ↑Sat Apr 13, 2019 9:46 pm Update:
Use science, a few sec of super chilled compressed "air in a can", sprayed on the case head, made the mission way easier. One bang and it just came out.
Photos:
https://photos.app.goo.gl/8uKwduy1N7Wop ... 13OHfLBs5o
Chamber was polished too, too much black stuff came out
Photos:
https://photos.app.goo.gl/Z83ZGuc72GQoV ... 90NDHJhJJ0

Because science, glad that worked out. Any idea what caused the problem?

This is why it did not chamber:
https://photos.app.goo.gl/YBMcuyALqRo5XbJJ7

Wow! That bulge on the shoulder is alarming. Did you give the chamber a good cleaning? Also, any ideas of what caused the bulge? It might be useful to examine the next couple of dozen ejected cases to see if there’s any incipient signs of any problems

mojo84 wrote: ↑Sun Apr 14, 2019 7:48 am Would something like liquid wrench orPB Blaster have worked? Would that be damaging to the chamber?

kayt00 wrote: ↑Sun Apr 14, 2019 8:51 am

Beiruty wrote: ↑Sat Apr 13, 2019 9:46 pm Update:
Use science, a few sec of super chilled compressed "air in a can", sprayed on the case head, made the mission way easier. One bang and it just came out.
Photos:
https://photos.app.goo.gl/8uKwduy1N7Wop ... 13OHfLBs5o
Chamber was polished too, too much black stuff came out
Photos:
https://photos.app.goo.gl/Z83ZGuc72GQoV ... 90NDHJhJJ0

Because science, glad that worked out. Any idea what caused the problem?

The Annoyed Man wrote: ↑Thu Apr 11, 2019 8:56 am

Beiruty wrote: ↑Thu Apr 11, 2019 12:20 am

The Annoyed Man wrote: ↑Wed Apr 10, 2019 9:21 pm It looks from your pictures as though the stuck round wasn’t fully seated to begin with.it may well be that the previous round left a piece of brass stuck in the chamber.

This is what I expect to find out soon. The 24" brass rod was not delivered yet. I suspected that the case neck was split and stayed in the chamber when the next round entered the chamber.

Beiruty, you might want to consider pulling the barrel off of the receiver if tapping on it with the brass rod with medium force doesn’t do it. Depending on how you have the upper clamped in a vise, if you have to start banging too hard on the stuck case with that rod, it could potentially damage the receiver. Removing the barrel, or at least clamping the barrel in the vise rather than using a receiver block to fix the upper in place while beating on the rod, would eliminate the possibility of receiver damage.

I'd be very careful about the use of heat on the barrel anywhere near the receiver extension. Another thought... if the bullet is already set back all the way into the case, maybe you could use a cleaning rod to keep the bullet pushed back while you dump any remaining powder charge out the front of the barrel. That way, if the primer does detonate, you’ll lessen the risks of bad juju.

Anyway, good luck with it, and let us know the final outcome.

The Annoyed Man wrote: ↑Wed Apr 10, 2019 9:21 pm It looks from your pictures as though the stuck round wasn’t fully seated to begin with.it may well be that the previous round left a piece of brass stuck in the chamber.

Skooter wrote: ↑Sun Apr 07, 2019 11:49 pm Warm up the barrel/upper and then hit the brass with super chilled liquid spray (upside-down co2 Duster).

kayt00 wrote: ↑Sat Apr 06, 2019 8:08 pm Maybe try grabbing a can of office duster and flip it upside down so that you get the super chilled liquid when you spray it, at the same time try beating the snot out of the cleaning rod to knock it out. Might be able to shrink it enough to knock it out.

rotor wrote: ↑Sat Apr 06, 2019 5:25 pm Tap it out with a wooden dowel. Wear safety glasses and don't point either end of the barrel at anyone. Shouldn't be that hard to get out.