Thanks very much for sharing the info... this is the best RFB load development info I have seen to date. I am wondering if the brass may end up being your limiting factor... I assume the FC brass you are using is full sized? I know everyone thinks you need to full size brass for semi autos, but try neck sizing only, you may be surprised.
When mine shows up the plan is to load some lower weight charges and fire them off treating the barrel with gun juice, sighting in the rifle and 'breaking it in' - paying little attention to accuracy. I will then do my load development with neck sized only brass. If it turns out unreliable I can always full size after, but I would hate to go through a bunch of load development with full sized cases just to repeat the process after I find out I could have been neck sizing only the whole time.