I had a rigby in .470NE and found it to be excellent. I only shot 2 buffalo and one old elephant bull with it, but it was plenty for either species. I sold it about 10-12 years ago. My only heavy rifle these days is a model 70 in .416 Hoffman. I’d like to get another double and if I do, it’ll almost certainly be a 470.
My problem is I recently had surgery to repair a complete tear of my rotator cuff on my right shoulder, where I mount guns. Can’t shoot a rifle for 10 more months, then not sure how much recoil my re-built shoulder will be able to handle. Gonna be interesting to figure out which caliber I can shoot going forward. I hope I’m not restricted to a 375 H&H.
Your future looks designed for a 450/400NE.