hi, i have a kelbly nyx 6br 8" that I'm trying to make it work. I have vv n140-150-135-133 and RS 50-62, for bullet 90 scenar, 90bt berger, 107 nosler cc, 70 sierra. for now the best combo is 107 nosler 30.2 n150 2850 fps. but i can't do better than 1.378 at 300 meters. i need to find a good load for 600 yard. thank you