There are various heavy .44 moulds available now, up to about 340gr. Cast from WW metal, sized then heat treated, they'd do for any game here and most in Africa as well.
using Lyman's moly lube, I've driven .45 cal bullets to over 2,000fps with perfect accuracy, with straight Cdn. wheelweights - brinel 13 (clamp-on only). I'm sure the .44 would also work.

FL sizing is out of the question, ie: cannot touch the shoulder. Too many people who should know better, have raised red flags on minimal shoulder headspacing being dangerous. Any type of loading is dangerous when a lack of knowledge is introduced.