The OK case

[oncemoreuntothejimbreech]

(04-04-2017, 03:00 PM)fredtoast Wrote: .223 is actually a small bullet.  So that might be true.

http://zonalandeducation.com/mstm/physics/mechanics/forces/newton/mightyFEqMA/mightyFEqMA.html

force = mass x acceleration

What the rounds lack in mass they make up for in accleration compared to 7.62.  Plus the tumbling affect rips the bullet into multiple fragments which helps transmit all of the kinectic energy over multiple wound tracks increasing the tissue destruction.  The more kinetic energy dumped from the bullet to the tissue increases the amount of tissue damage it causes.