Howdy, Pard,
This would appear to be a mould for the .44 Evans New Model cartridge, as the bullets are internally lubed,whereas, I believe the .44 Evans Short used a heel bullet and external lube (a la a .22 rf). The .44 Evans Short appears to be nealy identical to the .44 Henry Central Fire, a centerfire version of the .44 Henry Flat. The groove dia. on my Old Model is .427"! If the cartridge was different, I could easily shoot .44 Russians or Specials.