Nope not a 270
7.7 Jap (for Arisaka 99)?
Yup that’s it mate
Alright in the same theme (clue), lets try this… Clue: I am not a Mauser.
are you sure its not a Mauser?
Yes. Also, those are rimmed cartridges.
semi rimmed I think
Anyway… Incorrect.
Carcano 6.5*52
Nope, not that.
Is it a 6.5mm?
It is of that diameter, yes.
260 remmy…
Not quiet.
6.5x50 jap
Mmmm, no, but it is in the 6.5 region and my parent was a Mauser 
6.5×54mm Mannlicher–Schönauer
Nope, no man locking here, unless his name is Bob
Ah, 257 bob?
To be sure, give me the full name…