Google Drive spreadsheet for me that is synced to my home desktop in case the internet goes down.
I track
Bullet, powder, primer, OAL, distance from lands, SD, ES, velocity, accuracy, test loads tried, and probably a couple of more things depending on caliber
I track
Bullet, powder, primer, OAL, distance from lands, SD, ES, velocity, accuracy, test loads tried, and probably a couple of more things depending on caliber