Auto loading crossbow via RPM

[starslayer]

Sorry for some thread resurrection, but some additional questions have come up:

So what would the ultimate RoF be for having the weapon operate in the manner of:
-a magazine that holds multiple bolts and using the two lesser control matter effects.

My thought is that this would give it the same RoF as a repeating crossbow, but maintain the damage of whatever crossbow it is being used on. (assuming that no effective ST increasing technologies like a windlass have been used)

What if the caster wanted to increase the effective RoF?