I have a similar setup and missed a doe recently. I think my scope may have been touching the rear sight. I had a Simmon 2-6x32 and the optics were poor. I upgraded to a Leupold since Cabela's had them on sale. In mounting I had to take the rear sight off and the larger bell was still hitting the front sight based on the factory ring position. I have a Weigland rail on order so that should fix any issue with height and spacing. It also allows me to re-install the front sight for asthetic reasons. Did you have any issues like this? And does anyone know of a blank to install in the front sight location for SBHHBisley?
First Handgun Deer: ~1982 8" S&W .38Spl
SW 686 4" with Matchdot II
SBHH .45LC 7.5"
Contender G2 .35-30/30 (Bellm), .22LR, .22 Hornet