What cartridge have you thought about the most, but never owned a rifle chambered in it? For me it all comes down to the .257 Roberts, .250 Savage, .300 Savage, .303 Savage, .260 Remington, .280 Remington, .308 Win., and 7X57 Mauser. I know a looooooong list. I am not truly sure which one I have thought about the most... Probably the .257 Roberts. Seems like the perfect deer cartridge.