My apology in advance if I misunderstand the question/objective. But, here's what I do...
Work up my load at 100yds and chrony.
Plug the numbers into NFBal (Sierra or Darrel Holland's software) for theoretical trajectory.
Save it to an Excel Spreadsheet.
Collect dope on the rifle/load in the field.
Tweak the BC up/down slightly to get the curve to match the dope (if needed, NFBal and Berger have been pretty darn close for me).
Save the adjusted data to the spreadsheet.
Delete unneeded columns. Add columns for actual scope clicks/revolutions (I don't have BDC calibrated turrets and 1/10 MOA clicks are a big problem for hunting).
Because my Varmint reticle is neither MOA nor MilDot, I also convert the windage to hash marks and add a column for that so that I can still dial Elev and hold for wind.
Format the spreadsheet, print it, and laminate at Kinkos.
I do one big sheet (easy on my eyes) that goes in my pack, a luggage tag that hangs off the rifle, and a more permanent one that's taped to the buttstock with clear packing tape to protect it.
This works ok. But, I'm always looking for a better way.
Elevation changes, temperature variations, and playing a bit with the wind (it was dead still today) are next on the agenda. Then another load, and then another caliber, and then......more fun!
