Thread: Moulds/sizers for 577/450 Martini Henry

Originally Posted by shooternz

You need the mould to cast no more than .003" to 004" over groove diameter any bigger puts too much stress on the lube sizer and the bullet
The Lee .476 I have used and it is not up to it piece of junk really, try Accurate Molds in the USA I have just ordered a mould from them no mention
of shipping problems, They probably have what you need in their catalog, Another option is to paper patch .458" cast bullets; I think the 577/450 did have paper patched
bullets available.

Might try those accurate moulds, seem like they might do the trick.