Two of my FAVORITE firearms are an English P14 from WWI, in .303 British & the 98 Mauser from the same era in 8x57mm.
Either is sufficient medicine for Western hemisphere game, with the exception of the BIGGEST bears.
Yours, TMN78247
Loaded to the German standards the 8MM Mauser is quite a step up from the .303, and plenty powerful enough for the great bears.