I'm about to come into a Pietta '58 Remington clone and will need to acquire a few bits of paraphernalia to fuel it. As far as making .454" round balls:
Lee: available in 6-cavity and cheap. Have not been impressed with the quality of their smaller 1 and 2 cavity molds, but their 6-bangers seem to get a better rep.
Lyman: made of iron, and two holes is probably enough for this application. Lyman, however is a bit of a forum whipping boy when it comes to holding decent mold specs. Can they at least make a spherical mold that drops proper diameters?
RCBS: I know the quality is awesome here, but by the time you get up to .454", you only get one cavity and they are very proud of them.
Thoughts on these? Any others to consider?