Can't see lot numbers on my 100 round plastic cases,. Besides which I've added bulkk to fill in used so have no idea what cci I have
If you think you possibly have some of the miscreant ammo, make sure you wear proper safety equipment, especially safety glasses, and keep your hands away from the magazine if your rifle has one.
I have a friend who has a nasty habit of purchasing every odd box of 22lr he can find at gun shows, new, old, and part boxes, manufacturer, velocity, etc, be damned, he just throws them into a large plastic bucket, after removing them from the original containers, and uses them helter skelter in his Ruger 10/22.
He ran into a similar issue that this thread is about.
I wasn't there when it happened, but he called me about it to check out his Ruger, which was fine, considering it probably has a couple of hundred thousand rounds through it, and it's worn and sloppy, but still goes bang every time, and is no less accurate than it was new.
Anyway, to make a long story short, he had a couple of catastrophic failures that didn't do any damage to the rifle, mag, or shooter, so just continued to shoot, until one, just like described in another reply above, blew out the side of his magazine, causing it to drop out of the rfle, without damaging anything else.
The ammo was all mixed headstamps and velocities, bullet shapes, etc. He didn't know which headstamp was causing the issues, so he decided to throw the whole five gallon pail of ammo away.
He had just opened this bucket, after squirreling it away about six months previously, and I felt it was a waste, so I gave him $100 for what was left of the bucket, likely 20K rounds.
After sorting through it all to separate the headstamps and bullet dimensions, I had 11 headstamps from NA, Europe, and China. There were a couple of different bullet configurations, which went into cans of their own. I used 50 cal ammo cans for the variants.
I couldn't see anything on any of the cases that was obviously dangerous, other than some Remington "Stinger" which had a copper color, rather than shiny brass.
I shot all of that ammo through several different bolt action 22rf rifles without a single mishap, other than a couple of misfires in some unknown Chinese ammo, which was also filthy to shoot.
This is just an example of how these things work. For every bad round, there were several thousand OK rounds. Finding them with random inspections ????????????