This made me think of the post below

Val Forgett of Navy Arms took their .58 caliber Hawken Hunter on African safari, they worked up loads for it using a 610 gr. Minie and 200 grains of FFFg. It was a 9 1/4-lb. rifle. He said recoil wasn't as bad as expected when shooting offhand, was "a bit punishing" from the bench. They settled on 180 grains FFFg, and he killed a lot of big game with that load.

I dug this up after buying 1 of these Navy Arms Hawken Hunters New unfired. I read another piece where he hit an African Lion and took out both shoulders. Hard for me to imagine 180-200 Grains of 3F with a 610 Grain bullet in front of it, especially this Swiss stuff i shoot