I'm shooting a Grendel. But, I really like the 123 gr Lapua Scenars or the SMK. They both shoot really accurate and are pretty similar. I get better accuracy with the 123 gr than I do with the 120 gr or 108 gr. It's pretty much the Grendel go to bullet. But, not sure how they shoot out of a 6.5 x 47.
for 6.5x47mm L, I think the 123gr SMKs and AMax absolutely rock at the range - fast so they are flat as board to 300+. The 123gr AMAx is an absolute beast of a terminal performer, so if you are hunting, use that bullet.