I have two DMBs, a 12 bore O/U and a 16ga SxS with which I hunt pheasant and grouse, respectively. Sorry, I dont own a Dickson and thus I cannot comment on the relative strengths and weaknesses of the two. The main benefit of the true trigger plate action for the walking hunter is the low center of gravity of the design. The ejector springs are in the action, not the forend, and everything is screwed to the bottom plate, keeping the weight low in the hand. The other benefit of the design is how comfortably the action carries in the off hand. I think David improved the mainspring geometry and steels employed as compared to Dickson. They are likely very comparable.
