I have a M23 Heavy Duck with Briley chokes installed. If it had a double trigger it would be a perfect duck gun. It has 30" barrels and a high solid rib. A vent rib on a duck gun is just a water trap! I also use it for clays and am happy with it. The trigger doubled on me once when I had not pushed the barrel selector far enough from one side to the other.
I do have a CSMC RBL-12 on order and will see which is the better fowling piece.
I've shouldered the M23 20 gauges and think they are too heavy for a 20. Only my opinion of course...
