I have a rossi squire coach with 20" barrels and no chokes. I also have 12/410 inserts for it from Short Lane Arms. I have been contemplating machining some cross members off the rib to install rifle sights for each barrel. I think it would be nice to have as a trail gun while hunting moose. One of the barrels would be used with sights for a Brenneke slug within 40 yards. The other barrel with 410 insert would be used for grouse. Has anyone else installed double rifle sights on a smooth bore double barrel?