Something like this lightweight 7WSM with Bansner stock and 1:9 twist?
I went straight to force feeding it either 160g Nosler Accubond or the 165 Sierra GameChanger.
Either I’m sure I can get to a minimum of .05 with fps in 3k with 69g of H1000 or Retumbo... I’d have to check but IIRC 69g was almost my max. I will look at my log info tomorrow for accuracy.
Good Luck...It’s a cool lightweight rig once you figure out the bullet, powder and speed and you’ll enjoying putting some good sized furs in the dirt...😎