Tx, Blair and hello, Sixtus:
Romano is no longer making or supplying his moulds for either Spencers or Maynards.
One of my experienced Spencer shooting friends has shared that the Lyman 515149 bullet with its .200" meplat has cycling issues in his original Spencer. It may also have inadequate lube groove capacity.
Yet the .270" meplat Rapine 350T works fine in an Armisport, as reported here in another thread by Fox Creek Kid and also in all of my Romano Spencers and at least twi original Spencers.
That .270" meplat is as wide as I have seen and cannot say if wider would cause cycling issues.
Perhaps you can borrow some of the 350T's and try as is, then see if some that are hand filed wider, but loaded to the same OAL will cycle.
Close copies of the Romano 315 gr bullet and a heavier, longer one for the 56-50 and 56-56 Spencer with ADEQUATE LUBE CAPACITY are available from Accurate Bullet Molds in Salt Lake City. Accurate bores them via CNC and can make minor dimensional changes to meplat, lube groove, etc. Remember, the 315gr Romano was specifically designed to be shorter to allow more powder, yet stabilize in 32" to 36" twists.
Accurate ONLY deals via email due to hearing issues. My emailed spec's have always been met.
Get the IRON one for durability.
Regards,
El Supremo/Kevin Tinny