[AlexanderHowl]

0.3 AU per day is fast, over 300 miles per second, so it does not majorly inconvenience a society unless the hyperspace shadow is much further than 5.1 AU. Anything moving that fast is impossible to target with any ballistic attack unless it also possesses a boost drive, as the target is just moving too fast, meaning that your attacks are beam weapons or boost equipped missiles.