Swopjan, I don't know where you are located, but here in PA, my laws state that you must use bullets designed to expand. Even if your laws allow it, I still wouldn't recommend it. Yes, FMJ' kill (they have killed enough of soldiers in the past wars), but if you shoot them in the head, it is going to leave a 7.62mm hole in oneside and out the other. Good soft point bullets can expand up to twice their original diameter, so a .30 cal would leave a .30 cal hole going in, and probably take half the head off coming out. The FMJ is just going to push through the scull, and keep going, the soft point is going to transfer a lot of it's Kinetic Energy to the scull, causing a quicker, more ethical kill. So yes, you can kill one with a FMJ, but the soft point would still be the best choice even if you want to shoot them in the head. If your using SP's, it would still be a challenge to hit one in the head. Aim for the eye!!!!
Antique Shooter