This neck expander plug is .439" diameter, for loading lead .439" sized bullets, for a perfect fit without deformation, in Remington Rolling Block .43 Spanish, .43 Reformado, .43 Egyptian, and similar .43 caliber cartridges.
We can supply .43 Spanish cartridge cases, cast bullets sized .439" with SPG lubricant, loading dies, bullet mold, bullet sizing die, and wad punch. New .43 Spanish cases are available with .090" thick rims, to correctly headspace in antique Remington Rolling Block rifles, noticeably improving accuracy.
Use this neck expander plug in our #LEE-DIE-45-EX die body, with standard 7/8-14 threads, in your reloading press. This Lee neck expander die body is also supplied in our #LEE-DIE-4570 die set for the .45-70 Government.
You will also need our #DIE-43-COMPRESSION black powder compression plug, to compress the powder and over-powder card to the correct depth, to allow hand seating your bullet, in .43 caliber cartridges.
