CFE pistol has only become available for purchase in the last week, so as you probably know there is not a lot of data other than the published and it may take a while.
I'll be working up my own loads this week with xtreme 124FP.
You have't said what power factor you're looking for, but I would do a ladder with the starting FMJ load at the Hogdon recommended 4.6, 4.8 and 5.0 and chrono and shoot for accuracy/power factor to find what you want/like/functions well just like any other work up. Your results are going to depend on what your gun likes, barrel length/tightness etc. etc.
Look forward to sharing/seeing your data!