Earlier quoted context omitted.
>Shotgun slugs are a lot less penetrative than .50 BMG though; they're proportionally heavier and travel slower. What does the word "proportionally" mean in this sentence? Because factually, the slug is about half the weight of the BMG round. >You need significantly more thickness of armor just to stop the .50 BMG at all, by which point you've added so much more mass that you've gone much of the towards solving the h…
>You're looking at elephant-stomping-on-you levels of force, and you're trying to say it'll be mitigated somewhat because you have 5 pounds of steel on your chest rather than 2 pounds. You will be a person salsa even if you strapped a kitchen stove to yourself. the momentum conservation means that the 5 pound of steel would be moving with the speed of 18m/s after full momentum transfer from the 45g bullet hitting it…
https://www.youtube.com/watch?v=chZZp-ALV6o
(I looked up the high strength steel armor plates; they do weigh about 5 pounds)
This big chunk of steel stops the bullet:
https://www.youtube.com/watch?v=BrfskAfPB5s
Bit of a kick though and it pretty obviously isn't practical to strap something of similar strength to your body.