In fact, the .50-cal. hits with so much energy that it would likely kill you even if your body armor could stop it. The impact of the armor plate hitting your rib cage would be like taking a hit from Thor’s Hammer. That energy would still crush your organs and break apart your blood vessels and arteries, it would just allow your skin to keep most of the goop inside as you died. No laceration or cavitation, but so much crushing and shock wave that it wouldn’t matter.
From a US website discussing ‘how a .50 cal kills you’...