Hello All,

I bought a rifle last week and have no clue what I bought. I haven't received it yet. Probably will be 2 weeks before I get it in hand.
I would like to find out what the caliber is so I can buy brass and dies in preparation for its arrival. Its a 98 Mauser and it was listed as "Austrian Johann Peterlongo 11mm cal rifle.
The markings on the left side show a proofing 2,67 g G.B.P. / St.m.G. (see picture) Does this help to identify what the caliber might be? Your comments would be most welcome.