That should be easy. As long as x = a^(log_a(x)), where a is arbitrary real number and base for the logarithm function then equation above becomes:
log_0,5(Hit Chance) = ((AngVel * 40k) / (TurrTracking * TargetSig)) ^ 2
ā¦
finally: AngVel = TurrTracking * TargetSig * sqrt( log_0,5(Hit Chance) ) / 200
good luck to calculate that on the fly 