I've had a lot of experience with different scopes on my shotgun for deer hunting, but I only ever went turkey hunting once. A buddy who loves turkey hunting and wanted me to try it, guided me.
I used a Burris Signature 1.5-6X thinking the wide field of view and long eye relief would be great. Ended up circling a flock and waiting/ luring them our way. Since we had plenty of time, I ended up shooting him in the head with the scope set on 6X from 33 yards.