Not sure if anyone is interested in this. I have gone over 500 rounds of this I can report back I have not had any malfunctions yet.
However, this ammo leaves a bit of white/grey-ish ash as supposed to a black carbon residue that I mostly see in other 9s I have run.
Another thing I notice is that the brass seems to be a tiny bit smaller in diameter than the CCI Blazer, e.g. if I put a spent casing of the CCI in the chamber I get little to no wiggle room whereas this unknown ammo from the Eastern bloc has quite a bit of wiggle room. I am not sure what this means but this is my findings so far.