Nitrox, I also took a Husqvarna 9.3 but shot only a baboon with it.

RGP, I used the fiber optic front sight only for the first frontal brain shot, where I missed the brain, then switched back to a brass bead for the other shots. I think my shooting is more precise with a brass bead. That is my impression from having used 3 rifles with a fiber optic front sight.