It seems that the Russian stuff is not loaded as hot as most brass. Sounds like it didn’t have enough “oomph” to work the action of your gun. I’ve heard of that happening before.
Some ARs run it fine out of the box, some require some experimentation, like mine. Some just won’t run it.
Unfortunately, I bought a metric sh**-ton of the stuff before I tested it, so I was relieved that I could make it work. It’s great for plinking...and practicing stoppage drills!
Interesting article & thanks for the heads up/trick for mixing steel & brass to keep things running.
One question however is a metric sh**-ton more or less than a whole f*ck-ton ?