Won't get attack working...

Hi, I have created a "Ward" unit that is a turret. I want that the turret shall fire arrows that will move so slow that if the unit is still moving the arrows won't hit.

Here comes the problem:
-The arrows moves slowly through the air but will still hit the unit.. ..Even if I have the following combat settings:
Weapon Type=Missile(Splash)
Weapon Arc=0.40
Weapon Homing=False
Weapon Projectile Speed=250
Weapon AOE(3 different)=10
Weapon AOE targets.. ..blablabla..
Weapon Range=1000

What's wrong?

I thought that Missile-type attacks always hit a unit even if they don't have 'homing' enabled and visually the missile misses.
Maybe you should try using Artillery attack type?

You maybe have right.... ... Thanks!