Capt. Frank wrote on Mar 24^th, 2020 at 9:53pm:

A little research on this forum will answer your questions.

Thanks Frank I have - and castboolits, thehighroad, the shooting times, etc - and it seems as though recommendations have changed over time.  I don't know if the powders have or not, but I'd rather be safe than sorry, and get the most up to date information.  Thank you.

Oh, shoot, one specific question for you - I found a thread from the fall of 2019 where you discussed considering changing from IMR4350 to H4350.  Did you ever make that switch?  Did I miss that thread?

EDIT: I see just one thread below where you did update.  Thank you.

Lastly, I saw a pretty comprehensive primer comparison, however it was just standard primers.  Will continue digging on magnum vs standard LR primers.