I think it has a lot to do with bullet weight and velocity (Energy)
I prefer the jacketed flat nose bullets for the reason of High velocity and performance. In my 454 the 325 grain cor bonds have plenty of both and the 460 with 300 grain bullets will do the job if you don mind carrying it around.
I gave up on hollow points long ago on hogs and never considered them for dangerous game.
Lead bullets work fine in low velocity cartridges, and for higher velocities hard cast lead is recommended. I realizes that they are cheaper, but feel that what ever you decide for protection against something that wants to make a meal of you, cost should not be a factor.
Lots of the guys rely on hard cast and have first hand experience.
I have only had 3 experiences that that needed taken care of and the jacketed bullets did there job.
J E CUSTOM