The published load data for that bullet and powder is across the map. I’ll look back through my collection of published info from the last decade this weekend some time.

Nosler, for 77gr lists 24.0gr as highest and not compressed

Lyman 49th lists Varget and 77gr BTHPs at 22.5 min and 25.0+ as Max (and yes they put the plus sign on there).


The point is not every rifle/chamber etc is the same, so start at 2-3% below whatever manual’s Max charge you feel is ideal, and work up your loads for your rifle.


Something else I’ve read while researching this issue is that while Reloder 15 may be more temperature sensitive than Varget, it’s more consistent lot to lot. And after using a light RE15/77gr charge for YEARS since I wasn’t shooting more than 400yds at that time, my experience concurs with my reading