No real issue making a strikeplate that can stop a .50BMG, stopping the spalling that will occur from the hit could however be a problem.
Hit will likely break some ribs but I'd rather live with that than a .50 hole in the chest!
Here's a wearable plate stopping a .50 API round from up close.
As for knocking you on your arse, note that the carrier + one cinderblock only moved a few inches from the hit
