Plotting sheets only work IF you have someone marking your target after every shot. Remote camera setups do the same thing. Or you can see where your bullet landed - bring money.
If you are just shooting a few rds on the target then going down to check (shooting blind), there is nothing to plot.
If you are shooting without markers, you will be spending money on excellent spotting scopes and/or rifle scopes.
The goal is to let you keep notes on what you think conditions are doing, where you aimed to compensate, and what actually happened. Use this info to make more 'accurate' corrections for future shots.
You will need to stay consistent with your observations and develop a language to document.
You will also need a rifle/load and shooting that is consistent/accurate enough to make observations valid.
Jerry