The RBL's strike me as being heavy for a walking field gun, I do not want to carry a 7lb + gun while walking behind a dog. In my world I want a 12ga no more than 6.5lb and a smaller gauge should be lighter. I do not understand why anyone would want a smaller gauge gun that weighs more than a 12.
Note my comments above are for walking field guns. I do own some heavier 12ga SXS guns for high volume dove shooting, sporting clays etc but I think they will all top out at about 8lb.
Here is a description of a gun I recently had made for myself by Verney-Carron.
12ga 2 3/4" chambers
Steel shot proof barrels
30" barrels
Screw in chokes
6lb 6oz
round body action (action at the hinge pin ....1.5 wide, .75 deep, 6.5" diameter around the barrels)
bottom rib left off to save weight
classic style swamped game rib
Hand checkered, hand engraved
ejectors
Skeleton butt plate, so that a recoil pad would not drag when bringing the gun up.
Lock up is the same 6 lugs that V-C uses on the big Nitro double rifles
