The 450 Dakota, Rigby, Weatherby all have similar enough case capacity to work.
I have loaded for all 3

For top loads I use 100grs H4350 with a 600 for 2400fps. After that I agree, something with a bit less recoil is nice.

20grs of TrailBoss with a 400cast for about 1500-1700fps
65grs Accurate 5744 with 350gr Hornady for 2400fps