Dad is big into reloading for centerfire rifles so he is a fanatic about tracking loads and bullets etc
That's a good thing. On a serious note. Buy a big pack of targets you like. Shoot at least 3-shot groups (5 is better). Record the date, range, bullet, powder, andprimer on each target right after you shoot, and
keep the target in a file folder or large envelope marked to identify the gun.
There's nothing more usefulthan being able to compare targets after several range sessions. There's nothing worse than trying to remember if you tried a certainload before, and/or how it shot.