I am in the process of building a 6 CM bolt rifle. I have been reloading for a few years and feel more comfortable with using published load data. I have been told 243 Win and 6XC is close and load data for that would be a good starting point? So far I'm coming up with 41 to 42.3 of H4350. Seems like mid 41's are doing well. Any help and suggestions would be greatly appreciated