Gentlemen,
Here is my answer to the RBL. This is a converted 16gauge FN sidelock, now 20 gauge, rifled 1 in 20, with 20 inch barrels, it weighs in at 6 1/2 pounds with red dot scope attached. It will shoot 1 inch right/left groups at 25 yards or about as far as you want to shoot if you can hold it right. The upwards recoil is brisk but manageable. The scope is a fourth generation Aimpoint. The rib was drilled and taped in three locations so that a conventional scope can be used in the regular position or either of the sights can be mounted in the forward "scout rifle" position.