No, but I have a Ruger American Predator in 6.5 G. I think 6.5 G for a bolt gun is a good choice; mild yet powerful enough and with the option to reach out in range and buck the wind.
Ya I was curious. The 5.27 is one of my favorite bolt actions and mine is a stable range gun and I just built my first (and probably only) 6.5 AR. Seems like I could do a lot with Grendel hand loading.