Tula is a main armory in Russia
If I recall. The steel jacket on the bullet isn't supposed to be an issue, the steel case certainly is. I've used pulled steel jacketed carbine bullets from LC ammo. The barrel life on a carbine is really great anyway. Those tests during the war were 6,000 rounds and they hardly bothered the barrels, in fact some of the carbines were released into service after the tests, so they were far from worn out.
I sure don't want that shellac coated steel cased Russian crap in my carbines. Their AK 47 and 74s have chrome lined barrels and chambers designed for steel cases, so they get away with it. The extractors are the weak link anyway in the carbine, why abuse them?