Fatman-type weapon for supermutants gone wrong

[nenina]

Hi. So I cloned the Fatman, its ammo and projectile and explosion, then I switched the projectile to a timed explosion with a detonation beep so that the player has 2.6 seconds to get away from the bomb projectile before it blows a 512 wide explosion. The problem: when the projectile lands and explodes the explosion is always on center and above the enemy supermutant that fired the weapon, not at the projectile location. Why? Is this the reason no enemies in Fallout 3 use the fatman?