Re: How are you keeping track or your come-ups
I have tried most of the methods listed above, to include just writing in pencil on the side of the receiver (stainless action, so it could be seen).
An Avery self-stick label inside the rear scope cap works pretty well, but I have recently started keeping all my come-ups in a small spiral bound Rite-in-the-Rain pocket sized notebook. It stays in the bag that goes with me to the firing line, so whichever rifle I'm shooting that day, I've got the dope for it. Stickie inside the scope cap serves as a backup.
I mainly shoot F Class Open, but have been known to shoot F T/R and Across the Course occasionally. Since these are Known Distance events, my list of come-ups only include (from a 100yd zero) 200,300,500,600, and 800,900 & 1000.
All my scopes are MOA adjust and all my come-ups are recorded in MOA. Target scoring rings are laid out in MOA, so it just kinda makes sense to not complicate things.
If I were to venture into the UKD world I would probably still keep the same type of info available to me, but I would go with a rangefinder set in meters, have a mil-mil scope and record all my come-ups in mils for every 50 meters out to whatever maximum was appropriate. All that data might require a chart of some kind taped to the stock or a card tied on.
Just Sayin'
Paul