So much more info needs to be known before this can be answered properly!!
Each drilling has to be taken case by case to see what it REALLY is, and what it REALLY is worth...
The above drilling may be a modern Krieghoff, with 2-3/4" chambers ect... 7x65R is an excellent cartridge, between a 7-08 and a 280 Rem...
Lask i checked, you can get S&B, Norma and RWS brass/loads in 7x65R...
Anyway, as i said, we would need a LOT more info to give you a proper answer...
DM