Before I started ladder testing, I probably sold a rifle or two that I deemed "inaccurate" when in reality, I probably just didn't find the right load for them.
It is amazing the "Zen" you'll feel when you watch 1 shot after another shoot into the same hole. Then you know, that is the load for this gun.
Without it, you're shooting in the dark so to speak. With it, you'll know for sure.