6BR with 103’s-107’s… if you want to eat a bunny than you better make a “Head Shot” because a body shot looks like an impact on a red paint filled water ballon…By long range to me, I'm wanting a 6mm cartridge that is capable of reaching out to 600-yards minimum with complete accuracy and entertaining terminal ballistics on rock chuck and coyotes.
6BR at 600 is always in the competition for great groups and winning scores as well as being the “Easy Button” to load for and has general availability, low operation cost and good barrel life.
Whichever 6 you choose, and there many options to make life easier now that you can have “off the shelf” ready to load 6PPC, 6BRAI, 6GT, 6XC without having to do a lot of prep work that some of those cartridges used to require.