Do you sectional desnity?

9mm is a shit penetrator

wouldn't you think 36gr moving at 1200 would be defeated just as easily?

Nope

Superior sectional density provides superior armor penetration

@Bukkaking Is that the Generation Identity logo as your pfp?

SAS a big gay prove me wrong

APFSDS is the prime example of sectional density providing extreme penetration benefits

Sorry to interrupt but I know they use a black and yellow lambda for their logo

More mass behind less cross section = better AP

https://www.youtube.com/watch?v=8WrokNC3Clc

but its only 36gr dude

Kinetic energy is based on velocity not mass.

you can get that much FPS from a 36 gr projo out of an airgun

so you are telling me an airgun could theoretically defeat 3a?

>ball projectile
>wonders why it cant penetrate

Hmmm

Off topic but, are all business websites fucking black and white

@RoflTank F=m*a

I only know of 1 9mm that defeats 3A

@FireRising that's cute but Ek = 0.5 * m *v^2

Saying mass does not matter is turbo retard mode.

mass * velocity^2

What do you think matters more?

compare to a 223 which is a 55gr+ at 2800fps+

velocity and sectional density

big difference

True but your original point was "Kinetic energy is based on velocity not mass."

Impact energy increases linearly with mass but quadratically with velocity

Ergo, you can accelerate sand grains fast enough to crater a continent

.22lr still isnt making it through soft body armor

agreed

.22 routinely defeats soft armor though

sure, if you consider body armor to be cotton and leather

Not even kevlar or aramis

aramid

But Rofl, that isn't going to work for a handheld weapon system in this century.

think about it like this, 5.7 cannot defeat 3a most of the time

and it has higher sectional density and higher velocity than .22LR

The idea of a sand grain cratering a continent with velocity that is.

Actually Fire, if it wasn't for the atmosphere that'd happen regularly.