Very interesting! Thank you so much for the information and pictures. It does seem rather redundant indeed, interesting that it is a 3.2g powder charge, as compared to the x57’s 3.5g. Perhaps with the deeper seated seated bullet it is an even smaller case capacity. I thought I read a mention of it in 1900 but I cannot confirm that as I can’t seem to find it again, I maybe confusing that with another cartridge I was reading about. Thanks again!