Can we re-title this ruined thread?
Good point, Jim...the question posed by the OP was most likely answered in the first page of responses.
What would be good is for the ones in the know to post loads we can use to duplicate the aforementioned atomic loads that were used back then in the factory loads of yore. I have Hornady, Nosler and Sierra 240 gr bullets as well as the "KEITH" bullets.
I will be using the HOT Remington 2 1/2 Magnum primer.
We can have a "Loads of Yore" list.
https://youtu.be/lBkUz6cQnPY