Originally Posted by mathman
I don't know what Ole 270 is using, but 35 gr. of H4895 works great for me under 100 grain Noslers and Sierras.


Yep, that one in Hornady cases. I've also used Big Game and Varget in the past, but H4895 is the current favorite with 100 Speer Hot Cores.
In my M99R with it's slow twist I use the 87 Hot Core over Big Game and 87 TNT over RL-15 for two loads that cover the spectrum and also hit the same POI at 100 yards.