43 Spanish Chamber

[Steveu]

I checked the dimensions against what is in the "Handloaders Manual to Cartridge Conversions" and it is a 11.15X58r. I was looking at the dimensions that were online at Load Data and they show what I think is the wrong dimension for the cartridge. They list the cartridge as the "11.5x57R/ .43 Spanish Reformado" and the diagram is labeled 11.15x58R. I am still confused by the Lee die shoulder length. It should not matter, because I am going to be using new brass and neck sizing.

Cheers,
Steve