I have a Winchester 42 that others forgot to use back in the day. Modified choke. I use clay target 8.5 shot for dove and for pen raised Quail. I like the short target loads because they both pattern better and penetrate
better ( pine board test) than 3" 7.5 shot.
I usually use the .410 for dove opening day or two. Within about 20, maybe 25 yards, I do about as well as with a twenty. I have used it on pen raised quail (and a couple of pheasant) successfully. I'm getting old and not the expert shot that I once was, but I do OK with the .410. I have a younger friend that has a custom build/fitted .410 O/U and he uses nothing else here. He goes to Argentina 3-4 times a year and shoots thousands of birds. He is an expert. He shoots the same target loads that I use.
Don't be surprised that ammo is more expensive than 12 or 20 ga. Those of us that like .410 and 28 ga, are accustomed to paying the price, two, maybe three times the cost of high volume sales of the larger gauges.
Best wishes,
Jack
I love my o/u 28 gauge. I would love to have a model 42!
Always makes me smile when folks paying hundreds/thousands of dollars to hunt complain about the cost of shells. I ride them pretty hard and then finish with "I like to shoot 28 gauge because I get to shoot more"..