Here are some examples. (bare with me this will take a while to load)
Sauer drilling with original large bell 6x Nichol scope. Great optics but you have to lift your head off the stock to use it, great if your in a blind with a good rest.
Same rifle with 1.5x small tube scope mounted low to the bore, very fast handling for still hunting, handles like a DGR set up like this, as you can see accuracy is sill more than acceptable.
My coyote hunting gun5.6x50R Mag/12ga with large bell scope, note height of mounts for scope objective to clear the barrel.
Same rifle with straight tube mounted low, success is in the pic.
For me the combination gun set up with a straight tube scope mounted low is a win/win combination. Straight tube scopes can be had with 6x on the top end if you feel you need more X's. As far as light transmission, I've never had a problem during legal shooting hours and with coyotes or big game if you can see them coming with your bare eye there enough light to see them with the scope.