It is meant for use in the Mauser 1871 and 1871/84 Mauser rifles. The unique head means that this case cannot be formed from other common brass. It uses a 0.446″, 370 gr lead or paper patched bullet. If needed we can also supply lead bullets for this cartridge. the brass is not headstamped due to its shape. This brass is packaged in lots of 20. Shipping weight is 315 g/20 cases.