I use a 240 grain Lee tumble-lube 240 grain bullet, (TL430-240SWC
) no gas check, cast from my indifferent wheelweight alloy, over 19.0 grains of Alliant 2400 for 1345 fps from my 7.5" Ruger Super Blackhawk. It's not a max load, but it does everything I want a .44 magnum load to do.
I'm not sure if I've ever shot a jacketed bullet from that handgun. It simply isn't necessary.