Helping a friend with a 8MM mauser rifle that was gifted with no information as to the correct chambering.
1. How many different 8MM mauser chamberings are there?
2. How many different bore dia. are there associated with the 8MM mauser?
3. Are there special markings on the barrel that should correctly identify what it is?
Reason I am asking to start.............. we Need to slug the barrel and have no idea what slug dia. to acquire.