It got dark on me again, but I did manage to install the new BKL-260D7 mount, get zeroed, and shoot a few groups. My hunch was correct, with 8.44’s doing 850 fps @ 13.5 fpe a 19m zero gives me zero at 31m also, perfect. My PBR should be roughly 14m-35m…wonderful!! Btw, I really like this self...