I also like to see what my loads are doing which is why I keep all the targets---I like the idea of the 3 ring binder also. That sounds neat and tidy. Hopefully I can hit a paper that size........
Randy
When I'm shooting at the longer distances I use the back side of old plan drawings paper from work (Approx. 22" X 36"). When I'm done I just fold 'em up to about 8"x11", punch 3 holes, and they go in the 3 ring binder also. Only drawback on this is that I have to take the long range targets out of the binder and unfold them to do a review/reminder. I put everything on the target - date, rifle, load, wind, temp, yardage shot at, number of clicks, powder lot #, bullet lot#, vel., etc., etc. I had a stamp made up many years ago that allows me to wet the stamp on ink pad, apply to target and fill in appropriate data - which by the way also reminds me to not forget something.
When my binder gets too rediculus I will take out anything that is probably never going to be needed and put them in a file folder for appropriate rifle/caliber and put them in a file cabinet in my reloading room. Which reminds me - "Why do I have targets from 30 years ago for a rifle/load I no longer even own still in neat files"?
I like the 3 ring binder method due to the fact I can take it to the range with me and if something has made things go amok I can pull out my 3 ring and review the last time things were good and only have to scratch my head with one hand. If something has changed 9 times out of 10 I find a new lot of primers, powder or bullets makes me do some adjusting. This has given me a reason to be much more confident that something changed because of components, not my rifle, barrel wear, or scope set up.
My 3 ring binder is about 4" thick with the "big rings" - don't buy a thin 3 ring or plan on cleaning it out quite frequently and then never having the old target that you want ------ been there, done that one