I've never tried it, but from looking at various loads for the heavier bullets, I'd sure try CFE223. It's usually the velocity king according to the Hodgdon manual.
In the middle of 2 lbs of it , Can't fault it, but something tells me it's not the 'one'........
I have the same feeling about CFE223...........it has never been the most accurate powder in any rifle I have tried it in
don't care if it flows good through a measure if it is not accurate
It works ok in a 223 with 62 and heavier bullets, but for me it's one of the best for my 17 rem besides 4320.
2 powders that I really like for 223 & 308 is AA2230 & Shooters world match. Other than that
now a days you get what you can get and try to make it work.