Thank you MrGee and Mete for info. Have enough of 43 Mauser brass, I've fireformed to 43 Spanish to reload. When I was a teenager in the 60s, discovered that 43 Mauser ammo for 1871 Mauser rifle could be shot in 43 Spanish rolling block. Not too smart to do, but a friend had the same rolling block rifle and we both shot 43 Mauser ammo in our RB's to get brass to reload. Never threw the brass away.