[nonsporting]

“.223 which is less than half the size of a .50 BMG.”

Should I laugh or cry? To illustrate the difference between these state the difference in mass—the 50 cal is 10x’s more massive. Or one can talk about penetration, where the 50 can pass through 6 residential homes before running out of gas.

[Zhang Fei]

Should I laugh or cry? To illustrate the difference between these state the difference in mass—the 50 cal is 10x’s more massive. Or one can talk about penetration, where the 50 can pass through 6 residential homes before running out of gas.

In the following video, eight .50 cal armor-piercing rounds stacked on top of each other penetrated 12 inches into a pressed earth wall 18 inches thick. Sandbags would probably be less resistant to multiple stacked rounds, but it's clear why some kind of soil-based barrier is the basic building block of even the crummiest infantry fortifications.

[Charles Martel]

Should I laugh or cry?

Indeed...