https://thesportsmansshop.com/223-vs-5-56mm-ammo-comparison/
Also, what is the jacketing of the Russian stuff you're looking at? There is some debate about steel.
Back when we had our last ammo shortages I bought some Wolf .223 steel, worked fine for several thousand rounds. Then I had this nasty jam, thought I was going to have to go to a gunsmith. Fortunately, I got it out. The brass .223 /5.56 had come down by that time & the price difference wasn't as significant, so I sold the Wolf and went back to brass.
Would I buy the Wolf again? If no brass was available, yes I would. I was shooting the steel .223 through a Rock River Arms Wylde chamber.