Damage Not Registering Properly

I had noticed this a few times in matches but was unaware if maybe I was just wrong or something. The other day though I was warming up with my friend in the firing range, two tapped him with wingman shots to the head and then body, and noticed his gold armor was still above half full. At first I thought it may have been a damage misreading on my end (the headshot read as 101 even though he had a gold helmet) but the following 45 pts of damage would have been enough to nearly break his armor if that were the case. I am also still having some issues with no-regs.