Yeah, I’m pretty careful about what I put through my AR rifles, but I realize that the Russian (or Chinese) weapons were designed for that crap, so I never worried about putting it through my SKS’s or Mosin. Same would be true for the M70AB2.AKs were designed for bimetal bullets. Cold hammer forged barrel with chrome lining. I have 15 year old Veprs with cases and cases thru them, and they are still accurate.