Russian primers are known to be harder, ive literally picked up all "duds" ive had and put them in my surplus military guns just to have them fire just fine
Your experience is obviously different than mine.
I’m aware of differences in primer hardness. I also know what a primer looks like when it has been properly struck. In addition to dude primers, I’ve seen a lot of them where the primer pockets are too deep……deep enough that an in-spec firing pin will never adequately reach the primer to ignite it.
In addition to crap primers, I see a much higher percentage of other types of malfunctions with Russian steel-cased ammo, beyond failure to fire.
Every class that I run has at least half the class, and usually more, running Russian steel-cased ammo; pistol and carbine. That means for each class that I teach, I’m seeing a minimum of 6,000 rounds of it going down range IN EACH CLASS. I’m seeing a minimum of 150,000 rounds of it fired in my presence each year……and that is a conservative number.
Yes, it wears parts out faster, but it’s still cheaper in the long run…….or it was two years ago
In addition to being dirty, it has a very bright flash signature, that includes “shooting stars” of sparks. Not the best lowlight training fodder.