About torps and missiles.

[Durandal]

Impact effects not appearing is a bug, plain and simple. Its because on your end, the shot didn't hit and the mortar passes cleanly through. This happens with many other longer ranged weapons in the game, particularly forward guns, because the further you get from your target, the less you're syncing up with them.

It's really just a product of FL's old netcode/collision detection code, and there's nothing we can really do to change that.