ergo said:mmm full metal jackets fuckkkk people upppp!
On the contrary. They're actually less effective than other rounds that are made for anti-personnel use. Wound damage is less as it would zip through and if it didn't hit anything vital, then it may not incapacitate the target. Where as say something more antipersonnel, like hollows, they'd expand, increase their surface area thus hitting harder/great entry holes, while also deflecting in various cavities (along with great expanded surface) create greater wound channels. Even the more frangible of rounds are better, breaking into pieces causing more internal damage.
FMJ's at a distance, some caliber/makes can cause a spinwheel effect, with yaw varying, thus hit and "potentially" rotate, but this is only after enough velocity is lost, and for example, a 5.56 has substantial velocity, thus takes a somewhat greater distance to achieve this. Some "specialty" FMJs have a flimsy jacket, thus allowing the bullet to "possibly" break up in cavities causing more damage. Problem with each is that they don't achieve this effect until velocities are dropping.
Though I doubt this game would accurately represent this, if it does, hats off. It'll probably be standard affair of stopping power as regular bullets, just with the added penetration through hard surfaces, and possibly having an added ricochet effect.