The point defense fire rules in Errata seem straightforward: roll Routine difficulty, kill the round on a hit, kill an extra round every 2 points above the number needed, and so forth.
Except: nothing says what's doing the shooting. Based on what's written, you could attach a PDFC to a 30cm high velocity gun and shoot down a tac missile. Or, you could have one on a gatling gun and achieve the same effect.
Now, I'm not particularly bothered by a tank gun shooting down a missile, though I'd restrict the results to its rate of fire (which in some cases could be one every few turns), but I am a a bit bothered by the slow-shooter getting the same results as the gatling.
Query: when rolling PDFC, does the weapon's autofire targets rule play a role? If you're pouring gatling fire on a lot of inbounds, are you going to get to roll at each of the 7 autofire extra targets same as you'd roll against the first, assuming they're in the arc that earns autofire target rolls? That would mean 1 + 7, 8 rolls, potentially more than 8 inbounds killed.
Except: nothing says what's doing the shooting. Based on what's written, you could attach a PDFC to a 30cm high velocity gun and shoot down a tac missile. Or, you could have one on a gatling gun and achieve the same effect.
Now, I'm not particularly bothered by a tank gun shooting down a missile, though I'd restrict the results to its rate of fire (which in some cases could be one every few turns), but I am a a bit bothered by the slow-shooter getting the same results as the gatling.
Query: when rolling PDFC, does the weapon's autofire targets rule play a role? If you're pouring gatling fire on a lot of inbounds, are you going to get to roll at each of the 7 autofire extra targets same as you'd roll against the first, assuming they're in the arc that earns autofire target rolls? That would mean 1 + 7, 8 rolls, potentially more than 8 inbounds killed.