I disargee with Britz's assessment of the 6br, it does have more power than the 6ppc.
The 6ppc has proven to be the most accurate 100-200 yard cartridge ever in benchrest but I have never seen anyone use it for 1000 yard shooting (I'm sure someone has). On the other hand nobody uses the 6br for 100-200 yard benchrest but the 6br or one of it's derivative's are some of the most accurate 1000 yard rifles capable of taking a deer.
I watched goodgrouper take an antelope at close to this range with a 6br Imp. with one shot, I'm sure it would have been just as lethal on a deer.
The people that under estimate the 6br are the people that dont own one.
It takes 43 muscle's to frown and 17 to smile, but only 3 for proper trigger pull.