I also used 4350 data to get rough starting point and loaded up a ladder to get a max in my rifle. I didn't chrono that load. I have this weird thing about chrono'ing starting loads because I'm afraid I'll steer away from a powder that might produce good precision but might not meet my velocity expectation.
That day I was starting over on my loads because I had just started coating bullets with hBN. I tested RE17, RE19, and RE22. My best starting loads were the RE19 & RE22. RE17 did not produce nearly as tight nodes as the other two so I chose to save it to play with for another rifle. RE22 has been a proven performer in that rifle since I built it back in '99-2000 timeframe.
