wat i do is i always aim at the point where i would give myself
allowance to notice the fucker;then shoot him.(takes abt 1/2
sec)
eg:i aim abt approx. 2 human width from the wall,so when the guy
appears,tats the max distance he would be able to move between 1/2
to 1 sec.within that period of time,u gotta have oredy taken notice
of him.juz wait till he move into ur crosshair & BANG!
UUUuuurrrrhhh.In other words....anticipate.
FEEL the satisfaction.