Just a thought. Moulds are about 50 bucks. For around 200 you can get a set of swaging dies that will let you swage lead or jacketed on your Rockchucker Press. These are samplings of some heavy stuff I've been playing around with for a friends 454.
These were all made on the same set of dies in two strokes each. Which is where swaging beats out moulds, you've got infinite variation (within limits) through adjustments and punches.
Adding a cannelure was an extra step (and expense). Cores can either be cast in an adjustable 4 cav mould or cut from spools of lead wire, or compressed shot or???. I went ahead and bought their press but you dont have to. You can do it on the RC'er up to 458..These bullets work GREAT and are only limited by your imagination.
Left to right;
270 gr JHP, 305 gr FMJ, 305 gr FMJ w/cannelure, 300 gr JSP, 360 gr Keith (TC) w/cannelure, 225 gr open point safety slug w/#9 shot.