Those maxihunter molds can be pretty hard to find.
Another option is paper patching the Lyman mold # 533476 if you can find one. It has a wide flat point for hunting and a thick skirt for heavy powder charges.
The ones I’ve seen on eBay are either for a Maxi Ball (not Maxi Hunter) or are for a wrong caliber. I need .54. Thanks for looking for me. It’s specifically the Thompson #7376.
Went through the boxes to see if there were any bullets left from when I had the Maxihunter mold. Didn't find any.
It was a pretty darn good design for the .54 TC. Expanded to fill the rifling quite nicely.
If bound and determined to have a plain base then converting a minie mold may be a practical way to go. This one I want to try out with a strong cotton paper wrap in the Lyman .54 Great Plains Hunter barrel. Maybe the plug should be shortened a smidgen for a longer bullet.