I as well have one on the way, a CZ. After a ton of research on this site this is what I have come up with by taking down every load, every powder, every primer, every bullet used.
After comparing all the load data I have written down from the members here the powder of choice was IMR 4320, the primer was Rem 7 1/2, and with a very small bullet selection the bullet was a 25gr Hornady HP. So...I have worked up several test loads with the powder measurments that have brought great success to the 17 Rem shooters:
IMR 4320 at 23.5gr COAL 2.20
IMR 4320 at 24.0gr COAL 2.20
IMR 4320 at 24.2gr COAL 2.20
IMR 4320 at 24.5gr COAL 2.20
These are my starting points, I will see how each shoots and then tweek from there.
Every time I would see someones favorite load for the 17 Rem I would jot it down, then I comnpared all the different loads and the above was the most common four loads with the 25gr HP.
Hope this helps! Good luck!!