Look at the cost. You will need to bore both barrels out to 32 gauge. Then choke them. Then you will need to have it chambered for 32 and then the ejector will need to be altered to work with 32 gauge shells. Then you will need to lay in a supply of 32 shells and then the most expensive cost will to be lay in a few coveys of quail . If 32 gauge guns would bring back the quail I would have two cabinets full of them and gladly loan you any of them.

Years ago I was interested in having a 24 gauge Darne made for me but it was pointed out that 24 gauge ammo was anemic at best and both the 20 and 28 could do what ever it could better and for less money. I hate logic sometimes.