Why are custom mob ranged attacks inaccurate? + how to make accurate

so in my case, i've noticed for a good while that when custom entities are given a ranged attack goal, their targeting system is very... inaccurate? or is it just me? like, they literally miss their targets about 70% of the time; it's as if the trajectory of the ranged item bullets they fire are random at most and aren't even accurately shot towards the defined targets, and idk if that happens to anyone else. can i make a targeting system similar to that of a skeleton, accurate but only without the charge-up? i need it for a boss i'm currently working on.