5 grains of Bullseye behind a cast?!?! You got bigger %^&*( that I do. I run 4.7 behind lead. 5.0 only behind FMJ. I'm at work right now, but if I remember correctly, 5.3 is max for 230 FMJ's.
Conrgrats on the prize. Sounds like it's gonna be fried eggs and fried bologna for breakfast!