I use a combination of technology. Takes pictures of the target and calculate with rangebuddy app. Transfer pics, range info and results to computer in excel. Excel will also let you link so input a link to the picture of the target for that load. Takes a bit of time up front, but once you get the hang of it things go pretty quick. Excel will also let you search/reorder the data for whatever column or specific measurement you want. Just make sure to keep a backup cope in the event of electronic failure.
