Misaka Mikoto was the 'mascot' of a professional esports team, and Liu Zilang had perfect comprehension of her shooting capabilities.
You could not say that she was accurate nor inaccurate.
She was at an indeterminable point between 'accurate' and 'inaccurate'.
It might be a little hard to understand, so an example might help...
Until after she had fired a shot, there was no guarantee that she would be able to hit a target that was supposed to be unmissable.
On the other hand, it was not impossible for her to hit targets that were absolutely out of reach.
You could say that, like her master Liu Zilang, Misaka Mikoto had invested a considerable number of skill points in her Luck stat.
For those reasons, Liu Zilang was not too worried about giving her the mission of shooting at his teammates.
If GodV and Long Shenjue were killed, there was nothing for them to do other than blame it on bad luck…