https://huttimports.co.uk/product/martini-henry-lee-bullet-mould/
Custom molds were produced for this customer in the UK in 2020.
Their description of the design:
single cavity Alloy Lee mould producing nominal 485 grain head designed to be used un patched in .577/450 martini henry. Come out at around .471 i use like this with great success or can be sized to .468-.470
