Hardcast bullets should not deform, hence the design to maximize the frontal impact area. Jacketed soft point bullets are good for whitetail and hog, but I gave up jacketed slugs long ago in favor of the non-expanding cast bullet.
I have used 357 mag 200 gn Keith style semi-wadcutters on hog up to 250 lb and had them bust through shoulders and pass through, bringing the animal down. I have also used 158 gn jacketed slugs successfully on whitetail with broadside pass throughs with success but prefer hardcast.
However, Jerry Lester is our 357 magnum expert and I believe he prefers the 125 gn jacketed soft point from a rifle/carbine and the 158 gn jacketedsoft point from his revolver, and he has tons (literally) of whitetail under his belt. HTH.