The Oz
SOC-14 1K
I think the easiest thing would be to treat the massed batteries in every way like any other weapon with a factor greater than 9.
Both HG and MT say that "spinal mounts get one extra damage roll for each letter" greater than 9. I would read that to mean massed batteries would not get extra damage rolls from this rule.
However, the rule about extra critical hits for weapons whose factor exceeds the size factor of the target specifically says "batteries" and even gives an example using a factor-9 battery hitting a size-4 ship. So this rule would apply to massed batteries.
So all together I would think that massed batteries get no extra damage rolls on any tables but do get the automatic critical hits if the effective USP factor of the massed battery exceeds the size USP factor of the target.
Done this way, massing batteries together gets you better chances to hit and penetrate defenses (including armor, thanks to the loss of the +6DM on the damage roll) but you only get one roll on the damage table (assuming the target is bigger than your massed batteries).
Both HG and MT say that "spinal mounts get one extra damage roll for each letter" greater than 9. I would read that to mean massed batteries would not get extra damage rolls from this rule.
However, the rule about extra critical hits for weapons whose factor exceeds the size factor of the target specifically says "batteries" and even gives an example using a factor-9 battery hitting a size-4 ship. So this rule would apply to massed batteries.
So all together I would think that massed batteries get no extra damage rolls on any tables but do get the automatic critical hits if the effective USP factor of the massed battery exceeds the size USP factor of the target.
Done this way, massing batteries together gets you better chances to hit and penetrate defenses (including armor, thanks to the loss of the +6DM on the damage roll) but you only get one roll on the damage table (assuming the target is bigger than your massed batteries).