Chuck my 28ga Repro is choked .040" and .020"
I concluded after patterning 28 gauges with three guns (SKB SxS with screw-ins, Franchi AL48 with screws, another Parker Repro Q1/Q1) was that chokes tighter than 15/1000th don't tighten the pattern. So I would leave your left choke alone and open the right to anywhere from cylinder to 10/1000th. Then you can hit close and far.
When I first started coming here someone posted that the Repros were regulated at the factory by adjusting the chokes. I don't remember who it was and I don't know if it is true. By regulated I mean making both barrels shoot to the same point. But if it is true and you run a piloted reamer up through the breech and open a choke you might change the regulation.
I shot decoyed doves with mine this Fall and it was a blast. Have taken it to hunt wild Bobs a few times and managed to hit some with it. Mine is straight grip, double trigger, with splinter forend and 28" barrels and it weighs 5lbs-5oz. I like it a lot.
If you open the chokes I would like to hear the results. I would like to open the right barrel of mine.
Best,
Mike
Last edited by AmarilloMike; 02/23/13 08:20 AM.