Does anyone know when UMC first started using the headstamp “UMC SH”.
My 1887 catalog does not list any “Solid Head” loads. The next catalog I have is 1890. It lists only the
.45-70 Government with “Solid Head”. I only have salesmen price lists for 1894-1904. These do not show any cartridges or headstamps and do not indicate which loads are “Solid Head”. The first catalog I have which shows the headstamps is the 1905 catalog. This shows most, if not all, of the loads on the checklist in issue 117 of the Cartridge Trader for “UMC SH” headstamps. The raised headstamps would most likely pre-date the impressed ones.