For me cast is for .35 caliber or bigger, others get jacketed. I would say in the the big bores little to no advantage to jacketed for most game in the US. Had not shot any jacketed loads in my 45-70's in many years. This past deer season I loaded up a few 300 JHP to 2000fps like I did decades ago. Shot a nice 10 point buck with that load and it did not perform any better than my normal deer load of the Lyman/Gould 330HP cast soft loaded to 1450fps. The recoil was a lot worse though.