I have owned/own numerous combo guns and drillings. I have owned a FAIR in 12/9.3x74R. It was a beautiful gun but I traded it for a Sauer Drilling in 16x16 over 7x65R. The FAIR was lightweight and paired with a quick release takeoff mount, it was super handy. The barrels are quite thin which keeps the wait down so when shooting groups to assess loads take your time between shots. If I let the barrels cool, it was a true sub MOA gun with a 6x Leupold. If you shoot a lot of shots in quick succession the shots will wonder. This has been the case with most of my drillings as well. Not like it really matters to hunt, haha.
I have also owned a Savage 24 20/30-30 which I picked up off the site. Seller did not mention the crack on the tang so I didn’t get a lot of work with the gun before I moved it along. Long story short was that I simply did not care for the exposed hammer barrel selector design. Truly cumbersome if actually needing the quick shot for which these guns are designed. Double triggers all the way.
I have actually had good success with Baikal combo guns. I’ve had a Baikal in 22/.410 which was super accurate and both barrels shot to same POI. I currently run a Baikal Sever in 22/20g I have a 1-3 power weaver mounted that works excellent. The one power scope is mounted low enough I can successfully shoot clays through the scope…. And I’m not much of a shotgunner, lol. It is a little heavier than what I like but I have carried it over 25 miles one day out hunting grouse.
I now favour my vintage German drillings for there fine workmanship and how they come to shoulder. Find one with claw mounts for impeccable return to POI when taking the scope off and on. There is actually a lot available on various sponsee sites for reasonable prices. I cannot imagine the prices will stay this low as the supply of these fine old guns run out. My most recent acquired was a beautiful 16x16 over 9.3x72R with an under lever. The gun is like new despite being made in 1914 based on the proofing. I paid $1500 from a site sponsor!!! There are deals to be had for some amazing guns. And, there is some super prices for those who have the ability to do some stock repair and some smithing.
Good luck with whatever you go with but you would not be disappointed with a FAIR combo.
Mike