Call of Duty: Black Ops IIII - PUSHING LUCK

I'm not sure if waiting for a vulnerable enemy to get to cover before opening fire on them, then immediately making myself vulnerable by hurling a concussion grenade (while charging forward and reloading), demonstrates the ice in my veins or the complete inability to correctly assess a safe path forward. Given that I cannibalised an Operator Outlaw sniper rifle to buff my herky-jerky DMR, I'm leaning towards the latter.