MS Hitman hit the nail on the head, faster isn't always better or even neccesary. The "need" for tougher bullets in pistols and rifles has come about because of the high velocity loadings now days.
In the 80's I shot many thousand 250xtp's out of the 454, back then it was considered a reasonably priced premium bullet. I saw that if I went above 27gr of 2400 the accuracy went away, it was the bullet distorting in the cylinder gap from pressure that was above the design limit.
Revolvers do not have enough velocity for much shock effect unless you are shooting some kind of frangible bullet like the glaser safety slug, but they are useless on game. If you stay around 1250 fps even a soft bullet will kill game cleanly. Consider that the american buffalo was hunted to near extinction with soft lead bullets @ 1300fps at the muzzle and they were shooting through them way way out there.
I shoot cast becasue they are cheap and good, I load to a velocity that is comfortable to shoot so I am comfortable shooting a couple hundred in an afternoon's practice. That way when you get a shot you will be good enough to instantly shoot your pig right in the eye. Oh by the way I have killed no less than 50 hogs with a .44 special charter arms firing a cast 250 @ 900fps that way. It's a lot easier to run after dogs with a little gun in your back pocket than a big revolver in any kind of a holster.
Mike C