Russian soldiers posted a video testing their bulletproof vests. All five bullets penetrated the armor plate completely. "Just f*cking great. Thank you, Ministry of Defense."
Got it thanks for the info. Just some terrible armor I guess.
Those cartridges sure looked like 54r to me. But I could be wrong
So protection for 7.62x39 and shot with 7.62x54r. No surprise it lost.