1) As Wills said- at realistic speeds, bullets are too fast to notice anyway
2) Since a bullet is so small... it's easier to mimic a real 3D object with Dooms 8 way sprites
3) Every other object in ZDoom uses a sprite and it would look well out of place
As it stands, if you desperately want 3D items... you may want to look at jDoom or something like that, or wait for model support in GZDoom.
But I'd still be interested to know why in hell you actually want this?
