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I did my first Tactical Carbine shoot this weekend. It was a blast!

During one of the runs, a gentleman's AR-15 had a jamb.
When here cleared it, what pop out is in the attached picture.

When the previous round ejected, the casing cracked in half and only ejected the back half.
When the next round tried to chamber, it obviously couldn't.

I wouldn't have believed it if I hadn't been there and seen it!

AB

I have seen that happen a couple of times, usually with reloads.

Looks like a frightened turtle.

I had that happen years ago with my first AR!

Looks like the water was too cold!

Years ago I competed in long range high power competition, actually decades ago, and reloaded to get the very best in accuracy and consistency in my rounds. Every once in a while I would miss the warning signs of incipient case separation, small cracks and discoloration of the case. Most times a separation isn't too drastic, but once I had one blow hot gases back at me, putting a ding in my glasses and I kept those glasses to show my students for many years.

Once during a match, really concentrating on shooting and follow through, I ejected the previous case and started to run the bolt forward to chamber the next round when I noticed that it was getting very hard to move the bolt. Luckily I stopped in time to be able to pull the case out with my fingers, but the separated case stayed in the chamber and I had to retire from the match to go fix the problem. When removed, the separated case showed the classic discoloration near the base that would have warned me if I had looked harder.

USA1 wrote:Looks like a frightened turtle.

USA1 ... Welcome back Stranger!!!

Haven't seen you 'round these parts in a while.

terryg wrote:

USA1 wrote:Looks like a frightened turtle.

USA1 ... Welcome back Stranger!!!

Haven't seen you 'round these parts in a while.

Thanks! ...been busy with two jobs, but that hasn't stopped me from lurking around here just about every day.

Back to the unusual looking round..... I've heard of bullet setback but that takes it to a whole new level. Yikes.

papajohn1964 wrote:Looks like the water was too cold!

papajohn1964 wrote:Looks like the water was too cold!

Seriously, that's why I NEVER buy brass that's been polished by the seller. Dirty brass allows you to see the real condition of the brass, but you can clean up the worst looking brass and make it look like new with steel pins and you'll never know you have a problem until it separates.

medalguy wrote:Seriously, that's why I NEVER buy brass that's been polished by the seller. Dirty brass allows you to see the real condition of the brass, but you can clean up the worst looking brass and make it look like new with steel pins and you'll never know you have a problem until it separates.

Interesting opinion. What specifically can you see when dirty that cannot be seen when clean?