Thanks much ss7mm.
I believe I will go Palm as you have, if I begin using Exbal.
Right now I use drop charts that I print from a free MS Excel ballistics spreadsheet, which I've modified to include angled shots from 10 to 45 degrees (in 5 degree increments). I use reticle hold-under hold-overs from my pre-printed drop charts. IOR MP-8 reticle. My drop charts aren't as infinitely flexible as Exbal, but if I know my hunt area elevations ahead of time, which I generally do in Alaska, then I can print a couple charts with different elevations and be pretty close with my drop charts for my hunt area. Works pretty well as tested out to 900 yds so far.
Thanks again for your explanation.