An alternate thought on Sandcasters.

[BetterThanLife]

No, it won't disrupt the FC, for the first shot at least, since the BP is light-speed, and the initial reflection is the fire control solution test.. It will only be launchable in reaction to the BP, and before the main laser comes in. Say 0.5 sec... on a typical shot of around 0.2LS

A gunner can't react that fast. And mounting multiple BP's that aren't connected to a laser will cause an automated system to expend all of its sand when the ship might not even be the target of a real attack. (At least at that point in time.)

 

[aramis]

Go watch a group of kids playing sonic.... they can and do react that fast.

The gunnery skill in sand is telling the mount whcih target to follow, and tracking when the laser is going to be out of arc.