I have a 10" bull .357mag barrel Contender, that I would like to shoot 168gr cast bullets in. The bullet is a Lee plain base. My first two tries with H 110 were disappointing, with a 4-6" pattern at 25yd. No leading, to speak of. I don't think it's the barrel, 'cause it will shoot PMC 160gr loads into an inch at 75yd. Just haven't hit on a good load yet, given minimal testing. Trying to save some time & trouble by asking those of you that have "been there, done that". What'cha got, I can try?>>>>>>Bug.