The Lee 310 is the only thing that goes thru my 5.5 inch Redhawk. Sized .432 with H-110 and a standard Federal primer I get a consistent 1200 fps. My alloy is ACWW plus some tin for good fill out. I've taken a bunch of deer with it, none of which have gone more than 50 yards and never out of sight. Most only go a few feet. I have never gotten a boolit back so I don't know if I get any expansion. Who cares, I get two holes and plenty of blood should I need to do any tracking. My shots have all been about 45 yards and under. All but one have been taken from the ground.
Same load works well on grouse and squirrels, bit much on rabbits though.