Drilled a 336 mount to fit my Vinci (same mount pattern as sbe2) Drilled it to match the two forward mount holes in receiver. Drilled one extra hole in the 336 base to match. Used an old base as a jig and drilled hole using a drill press and vise. Got a chamfer at the local hardware store to chamfer the hole. I used the 2 forward mount holes because there is not enough meat on the 336 mount to drill 2 holes to match the rear holes in benelli receiver (too close together) As it is, the chamfer will intrude into existing hole in the 336 mount. Take your time and it is easy to do, and go slow chamfering hole so the bit doesn't chatter. Worked out great and you don't have extra holes drilled in gun.
