My first 6.5x47 build was a 28" Krieger bbl'd. AR10 based on DPMS receivers. Though it's a bit of a beast to carry & maneuver, it's also very reliable & accurate. I'd already built myself three 6x47s (bolt rifles), and wanted to try the 6.5mm parent case; results with the gas gun were so encouraging that I chambered & fitted a 30" Bartlein med. Palma to a BAT 3L LR prone rifle, and a 28" Krieger sendero to an Eliseo RTS tubegun. Both these rifles shoot 130-142gr. bullets very accurately. The RTS is my go-to XC HP rifle, and the BAT has been very satisfying in several 600-1000yd. any/any prone matches.
I think the 6.5x47 would fill the niche you've described as well as - if not better than any other currently available cartridge. Bbl. life looks to be truly excellent, based on what I've seen through a Hawkeye borescope used on four of my own 6.5x47 bbls. Recoil is very manageable over the course of a long day of shooting, and accuracy is excellent. As long as you don't expect 6.5x284 velocities out of the Lapua case, you should be well-served by a 6.5x47.