@Pioneer flinter
I'm pretty sure Track of the Wolf is the only source for the Lee .480" six-cavity gang moulds, but I checked a little while ago, and they are currently in stock. You will need to get a set of Lee handles for them, and the handles are unfortunately out of stock, but I suppose you could "borrow" some handles from another Lee mould until the extras become available.
I think Lee
only makes the .480" mould in the six-cavity version. I've never tried a gang mould like that, but based on
@B P Maniac Shooter 's recommendation, I may just have to get one. I got a good deal on multiple boxes of Hornady swaged .480" balls a while back, so haven't needed to cast any of that size.
Best regards,
Notchy Bob