For my Pedersoli Safari double rifles, I had Tom at Accurate Molds make a bullet mold that drops 775-grains @ 30:1. Mold drops bullets with three driving bands, each a different O.D. Pan lubed with SPG and using CCI #11 Magnum caps to ignite 110-grains Goex FFg, a right-left (I always shoot in this sequence) at 50 yards unsupported from a bench prints a cloverleaf. At 85 yards, group opens to about three inches.
Tom's mold is the best finished, most nearly precise (to its order specifications) of any built-to-order mold I've experienced. Delivered cost was about $125.00 for single-cavity iron mold.
Hope this helps.