Way to go on an awesome bull. So did you end up getting to shoot a mule deer too after you got done shooting your bull? By the way, I am relatively new to this forum, but have read what straightarrow has said about having a high FOC. Although I have already invested in 100 grain broadheads and light arrows that are already slightly over-spinned, I definitely plan to try and achieve a higher FOC in the future. It sounds like it is the way to go!!