Sharing .308's case diameter and taper, the 6.5x47 Lapua feeds smoothly from the Accuracy International double-stack double-feed magazines.
The 6.5x47 Lapua case is very strong and the brass is excellent. None of my loads were limited by pressure signs on the case head, and even with nuclear loads, the bolt was easy to open. I was able to meet and beat velocities achieved in my .260 with the 6.5x47 Lapua; however, pressure was prematurely limited by primer cratering and an occasional pierced primer. Remember that the AI-AW is designed to reliably ignite 7.62 NATO ammunition in field conditions. Its firing pin protrusion and firing pin hole are not optimized for a high pressure small rifle primer. Normally, the way to solve this is to bush the firing pin hole, use a smaller-diameter firing pin, and control the firing pin protrusion, and this is easy to do on a Remington-style bolt head. A new bolt head assembly on the AI runs about $850, and it wasn't something I wanted to have modified. Even with this limitation, my final load was the 123-grain Lapua Scenar at 2930 fps using RL15 and BR4 primers, about 110 fps faster than Lapua's factory load. At similar pressure, the 130-grain Berger VLD would be going about 2850 fps, and the 139-grain Lapua Scenar a little over 2700 fps.