It’s like a lot of things...
The goal is 100% right? The biggest improvement you will see comes with the first 75-80%. Above that, the ROI (as it were) exponentially decreases. At a certain point, outside factors and your inability (and skill) to control them become greater than the percentage of gain from doing one (or many/all) of those remaining tasks above the 75-80%. Think about this for a minute: if I remember right, the top of the apogee on a .308 at a nominal velocity is somewhere around 60’ AGL at its highest point. What the wind is doing in your particular location at that moment and at that altitude is something you’re never going to be able to control. Sure, if you practice and become skilled enough you can whittle away at that effect. However for most of us, it is something that will never be obtained.
Chasing that which cannot be obtained becomes a exercise in frustration. Me? I’ll be content to lay in a pasture, ding some steel, scratch my head at the failures, then go have a beer.
Everyone is different.