George Stringer
Staff Alumnus
Harley, I'm looking for a definitive source that would tell when the 8mm Mauser chambers where changed from a 20deg 48min shoulder to the 19deg shoulder and what rifles it affected. What I've found so far leads me to believe that any rifle produced after 1905 has the 19deg shoulder but I can't really point to anything and say that's it. Do you know of any such source? George