I encountered someone about 80m away. I began to shoot on sight and I fired a magazine at the person and he wasn't getting injured. He just kept running towards me not worrying that I was shooting at him. When I switched weapons to my other assault rifle I did the same thing and he was within 40 metres of my position. I ran out of ammo (couldn't reload for some reason eventhough I could earlier) and he shot me twice with his shotgun and I died.
I know I hit him several times at least because I was some shot firing with an ATOG sight when he was close but he wasn't even bleeding. This was on the stable servers.