Tl;Dr 7 rem mag.
I'm just here to add my +1 to Bergara and the 7mm rem mag crowd. Been a believer for many years. There is a newer better engineered cartridge you should research if you're truly interested in the 7mm. It's called 7mm prc. I'm not super certain on the specifics, but it's designed to be a long range extremely accurate shooter that mimics or inproves the 7 rem mag family. There's also .280, 280 Ackley Improved and a whole host of wildcats if you aren't opposed to reloading.
IMHO the best out of the box option to balance cost, performance, rifle selection, ammo availability, etc. is 7 rem mag though.
I'm just here to add my +1 to Bergara and the 7mm rem mag crowd. Been a believer for many years. There is a newer better engineered cartridge you should research if you're truly interested in the 7mm. It's called 7mm prc. I'm not super certain on the specifics, but it's designed to be a long range extremely accurate shooter that mimics or inproves the 7 rem mag family. There's also .280, 280 Ackley Improved and a whole host of wildcats if you aren't opposed to reloading.
IMHO the best out of the box option to balance cost, performance, rifle selection, ammo availability, etc. is 7 rem mag though.