I like my prime rib just warm thru with sprinkles of Maldon's sea salt. And for me the first 3-4 bones of the big end is what I want. If I wanted the small end i'd get a strip & just do a pan sear. Horseradish sauce if it over cooked.My cooking times aren’t approximate, just a rule of thumb. I prefer low and slow. The meat is juicier and tender.
I like to use kosher salt on meat as well. That, and cracked pepper.