I have a 6.5x47. It is a .473 case head i.e. the same as a 6mmBR or .308Win
It was specifically designed by Lapua in conjunction with Grunig & Elmiger rifles to outperform the 6mmBR Norma in 300m CISM competition, which is a rapid fire version of the 300m standard match competition. However, it seems to also be delivering the goods all the way out to 1000yds and I'm sure will stay the course...