P99, what test was this? Do you have a source to point to?
There's also the fact that the Tok is a 30 caliber round-nose bullet, while the 5.7 is a .224 bullet, a "smaller hole" unless you can absolutely be sure it'll tumble every time...
This is why I said it's back to the endless debate over whether the 5.56x45 is an effective combat round or not.
